ASCP PBT Exam Prep: Free Study Guide, 30 Practice Questions and a 4-Week Plan
The PBT(ASCP) phlebotomy exam is 80 questions in 2 hours, delivered adaptively, and nearly half of its published blueprint is specimen collection. Start with the map below, then work the 30 original practice questions — each answer explains why the other choices are wrong.
What the ASCP PBT blueprint emphasizes
The ASCP Board of Certification (BOC) publishes percentage ranges for six content areas. These are blueprint weights, not score-point allocations or exact item counts on an individual adaptive exam. The right-hand column is our read on what to lock down first in each area.
| Content area (official weight) | Master these first |
|---|---|
| Specimen Collection — 45–50% | Venous and capillary order of draw, two-identifier patient ID, site selection and sites to avoid, technique, equipment, complications |
| Specimen Handling, Transport & Processing — 15–20% | Rejection reasons (hemolysis, clotting, wrong fill, wrong tube), labeling, centrifuging/aliquoting, temperature/light/time rules, pneumatic tube |
| Laboratory Operations — 15–20% | OSHA bloodborne pathogens rules, infection control, QA vs QC, proficiency testing, HIPAA and consent, and the roles of CLIA/CMS, CAP, TJC, CLSI, DOT/IATA |
| Circulatory System — 5–10% | Heart and vessel basics, arteries vs veins vs capillaries, serum vs plasma, blood cell types |
| Waived & Point-of-Care Testing — 5–10% | Glucose, Hgb/Hct, PT/INR, urine dipstick, kit tests; QC and following the manufacturer's instructions |
| Non-Blood Specimens — 5–10% | Urine collection types (random, clean-catch, 24-hour), stool, sputum, throat and NP swabs, breath tests, sweat chloride, chain of custody |
Weights: ASCP BOC PBT content guideline, revised September 25, 2025. The same outline covers PBT(ASCP) and PBT(ASCPi).
Jump to: Practice questions · Order of draw · 4-week plan · Exam facts · Eligibility
Practice questions: 30 original PBT-style items
Unofficial practice written by Castleport Test Prep — not ASCP questions. This is a fixed 30-question set, not an adaptive exam: it covers all six official content areas in roughly the blueprint's proportions (14 collection, 5 handling, 5 operations, 2 each for the smaller areas). Your score here is feedback on these 30 items, not a prediction of your scaled score. Each item is tagged Foundation (know the rule) or Application (use it in a situation).
Specimen Collection (Q1–Q14)
Show answer
Answer: B. The CLSI-based venous order is blood cultures → citrate (light blue) → serum (red/gold) → heparin (green) → EDTA (lavender) → fluoride/oxalate (gray). The sequence exists so an additive carried on the needle can't contaminate the next tube.
- A puts the serum tube's clot activator ahead of the coagulation tube.
- C starts with EDTA, so EDTA can be carried into every tube that follows.
- D puts EDTA ahead of the serum chemistry tube — potassium EDTA carryover can falsely raise potassium and lower calcium in that chemistry specimen (see Q14).
Sources: BD tube guide citing CLSI GP41; WHO Guidelines on Drawing Blood §2.2.3 Step 8.
Show answer
Answer: D. Identification means the patient's details must match the request before any blood is taken. A mismatch on an identifier is a stop sign, not a footnote.
- A collects a specimen whose identity is already in question.
- B — room and bed numbers aren't patient identifiers; patients move.
- C checks only one identifier and ignores the conflict on the second.
Sources: WHO Guidelines on Drawing Blood §2.2.3 Step 2; Joint Commission patient-identification FAQ (two identifiers; room number is not an identifier); ASCP BOC PBT content guideline II.C (Patient Identification).
Show answer
Answer: C. CLSI-based guidance limits tourniquet time to about one minute. Longer constriction causes hemoconcentration — cells and large molecules concentrate below the tourniquet — which can falsely raise results.
- A and D keep extending the constriction time.
- B makes the constriction worse, not better.
Sources: Horizon Health Network Regional Phlebotomy Manual (May 2026) (tourniquet time should not exceed one minute); BD blood-collection practice guide citing CLSI GP41 (7th ed.); WHO Guidelines on Drawing Blood §2.2.3 Step 6.
Show answer
Answer: D. WHO notes that an artery and a nerve run under the basilic vein, so puncturing there risks nerve or arterial injury and is usually more painful. The median cubital vein, which lies between muscles, is usually the easiest to puncture.
- A, B and C describe properties the basilic vein doesn't have; it is a superficial vein returning blood to the heart.
Source: WHO Guidelines on Drawing Blood §2.2.3 Step 3.
Show answer
Answer: A. Using the arm without the IV avoids the problem entirely.
- B risks drawing blood mixed with infusing fluid or medication.
- C — WHO advises against taking blood from an existing peripheral venous access site because hemolysis, contamination, and IV fluid or medication can alter results.
- D is false for the same reason.
Source: WHO Guidelines on Drawing Blood §2.2.3 Step 3 (hospitalized patients).
Show answer
Answer: A. WHO's procedure anchors the vein with a thumb below the site and enters at 30 degrees or less.
- B — touching the cleaned site, especially placing a finger over the vein to guide the needle, contaminates it.
- C — a steep angle risks going through the vein.
- D — a bent arm isn't the standard extended position, and bending is linked to hematoma after the draw.
Source: WHO Guidelines on Drawing Blood §2.2.3 Steps 5–6.
Show answer
Answer: C. If the cleaned site is touched, disinfection is repeated, and the alcohol is allowed to dry completely (WHO describes about 30 seconds of cleaning and about 30 seconds of drying). Not allowing enough contact time increases contamination risk.
- A and B leave the site re-contaminated.
- D recontaminates the site and shortcuts the drying step.
Source: WHO Guidelines on Drawing Blood §2.2.3 Step 5.
Show answer
Answer: B. The butterfly tubing holds air. If the citrate tube is filled first, that air takes up part of its vacuum, the tube underfills, and the 9:1 blood-to-citrate ratio is lost. A discard tube (non-additive or another coagulation tube) primes the line first.
- A risks an underfilled, rejectable coagulation tube.
- C primes with an EDTA tube — an additive tube placed ahead of the coagulation tube, contrary to the order of draw.
- D doesn't remove the air volume.
Sources: BD order-of-draw chart (Texas DSHS copy); VCU Health Pathology order-of-draw guide.
Show answer
Answer: C. Of the three specimens ordered here, the hematology (EDTA) specimen comes first because platelet clumping begins after a skin puncture and can distort cell counts. Other additive microtubes follow; serum comes last. If a capillary blood gas were also ordered, it would be collected before the EDTA specimen.
- A and B reverse the priority.
- D — skin punctures have their own order of draw.
Sources: WHO Guidelines on Drawing Blood §7.1 (capillary sampling); Horizon Health Network Regional Phlebotomy Manual (May 2026) (capillary order of draw).
Show answer
Answer: C. Heel punctures go on the medial or lateral plantar surface, where the distance to bone is greater. A puncture that reaches the heel bone can cause osteomyelitis.
- A, B and D are not the recommended sites; the central and posterior heel bring the calcaneus too close.
Source: WHO Guidelines on Drawing Blood §7.1 (choice of site; complications).
Show answer
Answer: A. Sterile blood cultures come first in the venous order of draw so nothing from another tube can contaminate them.
- B and C are correctly ordered relative to each other (citrate before serum) but follow the cultures.
- D — test priority doesn't override the order of draw.
Source: BD tube guide citing CLSI GP41.
Show answer
Answer: D. BD's tube charts list 8–10 gentle inversions for EDTA (and for heparin and fluoride tubes).
- A — BD warns that insufficient mixing can produce inaccurate results and a redraw; anticoagulant tubes need immediate gentle mixing.
- B is the citrate (light-blue) count.
- C is roughly the serum/SST count.
Show answer
Answer: A. WHO's procedure has the patient hold gauze in place with the arm extended and raised, and specifically says not to bend the arm because that causes a hematoma.
- B promotes a hematoma.
- C and D don't provide proper pressure and elevation.
Source: WHO Guidelines on Drawing Blood §2.2.3 Step 6.
Show answer
Answer: B. Potassium EDTA carried into a chemistry tube adds potassium and binds calcium, producing the classic spurious pair: high potassium, low calcium. Drawing in the correct order (EDTA after heparin) prevents it; the specimen should be recollected.
- A doesn't fit a well patient with this artifact pattern.
- C doesn't create this electrolyte pattern.
- D — releasing the tourniquet promptly is correct practice.
Sources: ADLM Pearls of Laboratory Medicine, "Hyperkalemia"; Lima-Oliveira et al., Biochemia Medica 2013.
Specimen Handling, Transport & Processing (Q15–Q19)
Show answer
Answer: D. Citrate tubes are calibrated for a 9:1 blood-to-anticoagulant ratio. Underfill leaves relatively too much citrate, which ties up the calcium added during testing and can falsely prolong clot-based tests such as PT and aPTT.
- A reverses the effect.
- B — combining or topping up tubes corrupts the ratio and the specimen.
- C is wrong — the citrate amount is fixed, so less blood means a higher citrate-to-plasma ratio.
Show answer
Answer: C. Laboratory handling instructions call for ammonia specimens to be kept on ice and delivered to the lab immediately; ammonia is one of the classic time- and temperature-sensitive tests.
- A ignores the special handling the test requires.
- B is the rule for cold agglutinins and cryoglobulins.
- D — foil is for light-sensitive tests such as bilirubin, and overnight delay defeats the purpose.
Source: University of Missouri Health Care laboratory special-handling list.
Show answer
Answer: A. Cold agglutinins are antibodies that react in the cold, so lab instructions require the sample to stay at body temperature (37 °C) from collection until the serum is separated. Cryoglobulin samples are handled the same way.
- B and D cause the very loss the warm handling prevents.
- C — light protection is for analytes like bilirubin.
Sources: BD tube guide adopted by Oxford University Hospitals NHS (cold agglutinin transport at 37 °C); BD tube guide adopted by Gloucestershire Hospitals NHS (cryoglobulins kept at 37 °C).
Show answer
Answer: D. Red cells contain far more potassium than plasma. In vitro hemolysis spills it into the specimen and artifactually raises the measured potassium.
- A, B and C are not the classic hemolysis-driven increase.
Show answer
Answer: B. WHO lists the patient's first and last names, file number, date of birth, and the date and time the blood was taken. Labels are checked against the forms before the specimen leaves.
- A and C omit required identifiers.
- D separates labeling from the patient, which is how mix-ups happen.
Source: WHO Guidelines on Drawing Blood §2.2.3 Step 9.
Laboratory Operations (Q20–Q24)
Show answer
Answer: C. OSHA bars bending, recapping, or removing contaminated needles except in narrow cases, and then only with a mechanical device or one-handed technique. Contaminated sharps go immediately into closable, puncture-resistant, leakproof, labeled or color-coded containers.
- A and B are prohibited practices.
- D delays disposal and leaves an exposed sharp.
Source: 29 CFR 1910.1030(d)(2)(vii) and (d)(4)(iii)(A)(1).
Show answer
Answer: C. Employers must make hepatitis B vaccination available at no cost to employees with occupational exposure, after the required training and within 10 working days of initial assignment (with limited exceptions, such as prior vaccination).
- A, B and D all contradict the standard.
Source: 29 CFR 1910.1030(f)(1)(ii)(A) and (f)(2)(i).
Show answer
Answer: A. OSHA requires washing exposed skin with soap and water immediately or as soon as feasible, and a reported exposure triggers immediate post-exposure evaluation and follow-up.
- B and C delay the evaluation that depends on prompt reporting.
- D skips both the washing and the report.
Source: 29 CFR 1910.1030(d)(2)(vi) and (f)(3).
Show answer
Answer: B. OSHA requires employers to ensure employees wash their hands immediately or as soon as feasible after removing gloves or other PPE.
- A, C and D all leave hands contaminated between tasks.
Source: 29 CFR 1910.1030(d)(2)(v).
Show answer
Answer: D. Under Universal Precautions, all human blood and certain body fluids are treated as if known to be infectious for HIV, HBV and other bloodborne pathogens.
- A — infection status is often unknown; that's the point of treating all blood the same way.
- B and C narrow protections OSHA applies broadly.
Source: 29 CFR 1910.1030(b) and (d)(1).
Circulatory System (Q25–Q26)
Show answer
Answer: C. Serum is the clear liquid that remains after blood cells and clotting proteins are removed — it comes from a tube allowed to clot. Plasma comes from blood kept from clotting, so it still carries the clotting proteins.
- A reverses them.
- B — the clotting proteins make the difference.
- D — plasma comes from any anticoagulated specimen.
Show answer
Answer: B. Arteries carry blood away from the heart; the right ventricle pumps oxygen-poor blood into the pulmonary artery toward the lungs.
- A carries oxygen-rich blood away from the heart.
- C brings oxygen-rich blood back to the heart.
- D returns oxygen-poor blood to the heart.
Source: CDC, "How the Heart Works."
Waived and Point-of-Care Testing (Q27–Q28)
Show answer
Answer: D. If controls fail, patient results are not reported until the problem is resolved. QC is run at least as often as the manufacturer specifies, and results are recorded.
- A releases results the QC just called into question.
- B skips investigation and documentation.
- C — repeating until a lucky pass hides the problem.
Sources: CDC "Ready? Set? Test!" (2024); AAFP summary of CMS/CDC waived-testing recommendations.
Show answer
Answer: B. Sites testing under a CLIA Certificate of Waiver must follow the most current version of the manufacturer's instructions; manufacturers may change them.
- A, C and D substitute habit or convenience for the required procedure.
Source: CDC "Ready? Set? Test!" (2024), Following the Manufacturer's Instructions.
Non-Blood Specimens (Q29–Q30)
Show answer
Answer: A. The collection starts with an empty bladder: the first void is discarded and the time recorded. Everything after that, including the final void at the same time the next morning, goes into the container, which is kept refrigerated.
- B adds urine produced before the collection window.
- C and D miss urine and make the total meaningless.
Source: VCU Health Pathology, 24-hour urine collection instructions.
Show answer
Answer: A. Federal DOT rules require the collector to read the temperature strip no later than four minutes after receiving the specimen; 32–38 °C (90–100 °F) is acceptable. An out-of-range temperature triggers an immediate new collection under direct observation or an oral fluid collection.
- B, C and D don't match the regulation.
Source: 49 CFR 40.65(b).
What to do with the ones you missed
A miss is only useful if you know why it happened. Sort each one before you reread anything:
| Why you missed it | Fix |
|---|---|
| You didn't know the rule | Relearn it from the cited source, then write it in one line from memory |
| You mixed up a sequence (order of draw, procedure steps) | Write the full sequence from memory, then check it against the table below |
| You misread the stem | Find the one fact in the question that decides the answer |
| Two options looked right | Name the specific fact that makes the correct one better |
| A safety or specimen-integrity error | Relearn the principle before moving on — these are the misses that matter on the job too |
Redo your misses a day or two later without looking at the explanation first. Don't memorize answer letters; the real exam won't share them.
High-yield review
Order of draw: venous vs capillary
The sequence changes for skin punctures, so it is easy to mix up with venous order.
| Position | Venipuncture | Why | Capillary (skin puncture) | Why |
|---|---|---|---|---|
| 1 | Blood cultures (sterile) | Protect sterility | Blood gas, if ordered | Collect before microcollection tubes |
| 2 | Light blue — sodium citrate | Coagulation tube before clot activators and other additives | EDTA (hematology) | Puncture starts platelet clumping; get the count early |
| 3 | Red or gold — serum (clot activator ± gel) | — | Other additive tubes (e.g., heparin) | — |
| 4 | Green — heparin | — | Serum tubes | Serum is meant to clot |
| 5 | Lavender — EDTA | Late, so EDTA can't carry into chemistry tubes | ||
| 6 | Gray — sodium fluoride/potassium oxalate | Last |
Sources: BD tube guide citing CLSI GP41; WHO Guidelines on Drawing Blood §2.2.3 Step 8 and §7.1; Horizon Health Network Regional Phlebotomy Manual (May 2026). If no capillary blood gas is ordered, EDTA is first among the microcollection tubes. Your facility's procedure manual governs on the job.
Tube guide
| Stopper | Additive | Typical use | Gentle inversions |
|---|---|---|---|
| Light blue | Sodium citrate | Coagulation (PT/INR, aPTT); fill to the line | 3–4 |
| Red / gold (SST) | Clot activator (gold adds gel) | Serum chemistry and serology | About 5 (some charts say 5–6) |
| Green | Lithium or sodium heparin | Plasma chemistry | 8–10 |
| Lavender | EDTA | Hematology (CBC) | 8–10 |
| Gray | Sodium fluoride/potassium oxalate | Glucose, lactate | 8–10 |
Source: BD Vacutainer tube guides (U.S. and U.K. editions).
Handling rules worth memorizing
- On ice, delivered immediately: ammonia, lactic acid.
- Protect from light (amber tube or foil): bilirubin, vitamin B12.
- Keep at 37 °C until separated: cold agglutinins (and cryoglobulins).
- Hemolysis falsely raises potassium.
- Underfilled citrate tube: can falsely prolong PT/aPTT; recollect.
- EDTA carryover into chemistry: high potassium, low calcium; recollect in the correct order.
Sources: University of Missouri Health Care special-handling list; BD tube guides (Oxford University Hospitals and Gloucestershire Hospitals NHS); ADLM; CAP TODAY.
Outline items people skip
The official outline names topics that rarely make it into flashcard decks. Each is fair game:
- Coding and billing: ICD coding, ABN, test complexity (Lab Operations).
- Safety beyond blood: chemical safety (SDS, labeling), fire safety (response protocols, fire classes, equipment), radiation labeling.
- Non-blood collections: breath testing (H. pylori, lactose), iontophoresis (sweat chloride), nasal/nasopharyngeal swabs, CSF and semen handling.
- Special sample types: chain of custody, alcohol, forensic and newborn screening specimens; add-on test acceptability.
- People skills: pre- and post-collection instructions, age-specific and special needs, working with other healthcare staff, types of consent, malpractice and negligence.
- Units: results and reference ranges appear in both conventional and SI units; regulatory questions are based on U.S. sources.
Source: ASCP BOC PBT content guideline, revised September 25, 2025.
Your 4-week PBT study plan
Time assumption: about 60–90 minutes a day, 5 days a week. That fits someone who has finished (or is finishing) a phlebotomy program. If you've been away from the bench for a while, give Weeks 1 and 2 extra days. The split follows the official weights, so Specimen Collection gets the most time. This is our editorial plan, not an ASCP requirement.
| Week | Learn | Recall and practice | End-of-week check |
|---|---|---|---|
| 1 — Collection foundations | Order verification, patient ID and communication, patient preparation, site selection and sites to avoid, equipment and tube additives, venous and capillary order of draw | Write both orders of draw from memory every day until you make no mistakes. Work Q1–Q12. | Redo every Week 1 miss without looking at the explanation |
| 2 — Collection technique + handling | Venipuncture and skin-puncture technique, complications, common and special collections (timed, fasting, blood cultures); specimen acceptability, labeling and accessioning, centrifuging and aliquoting, temperature/light/time, pneumatic tube | Work Q13–Q19. Explain each handling rule out loud in one sentence: what to do and why. | Mixed redo of Q1–Q19 |
| 3 — Lab operations + POCT | OSHA bloodborne pathogens, standard precautions, PPE and sharps, chemical/fire/radiation safety; QA vs QC, proficiency testing, competency; HIPAA, consent, ethics; roles of CLIA/CMS, CAP, TJC, CLSI, DOT/IATA; waived-test performance and QC | Work Q20–Q24 and Q27–Q28. Build a one-page "regulates / accredits / sets standards" sheet from memory. | Redo Week 3 misses plus any older miss you haven't fixed |
| 4 — Smaller areas + mixed review | Heart, vessels and blood composition; urine, stool, sputum, swabs, breath tests, sweat chloride, chain of custody; every item on the "Outline items people skip" list | Work Q25–Q26 and Q29–Q30. Then take the full 30-question set in one 45-minute sitting (about 90 seconds per question, the exam's average pace). | Sort every miss with the table above; confirm your Pearson appointment and ID requirements |
Short on time?
- About 2 weeks: combine Weeks 1 and 2, then Weeks 3 and 4. Do a short mixed set every day so collection stays fresh.
- 6 weeks or more: don't add new material. Repeat the weeks where you missed the most, and keep mixing old questions back in.
PBT exam facts
| Item | Current rule |
|---|---|
| Exam | Phlebotomy Technician, PBT(ASCP), ASCP Board of Certification |
| Length | 80 questions, 2 hours — an average of 90 seconds per question if you spread time evenly (120 ÷ 80) |
| Format | Multiple choice, four options, one best answer; computer adaptive testing (CAT) |
| Question types | Theoretical (applying knowledge) and procedural (performing technique, following QA protocols) |
| Scoring | Scaled 100–999; minimum passing score 400. No set number or percentage correct is required. |
| Unscored items | Field-test questions are mixed in and look like scored ones |
| Test site | Pearson testing centers; schedule within the eligibility period on your Admission Notification |
| Rescheduling | Through Pearson at least one full business day (24 hours) before the appointment |
| Calculator | On-screen calculator provided |
| Application fee | $155, non-refundable for PBT(ASCP), as checked November 2, 2026 |
| Results | Preliminary pass/fail on screen; email to view the official score within four business days, once required transcripts are processed |
| Content outline | Revised September 25, 2025 |
Last verified: November 2, 2026, against ASCP BOC's PBT credential page, content guideline, About the Examination and scheduling pages.
How the adaptive format changes your approach
- You can't skip. Every question must be answered before the next appears, so make your best choice and move on.
- Flag, don't stall. You can flag questions and review them if time remains after you've answered everything. Changing an answer doesn't change questions you already received.
- Don't game it. ASCP explains that deliberately missing questions to get easier ones tends to lower your ability estimate and backfire.
- Expect mixed topics. Questions from all six areas can appear anywhere; the algorithm doesn't go one area at a time.
- Hard questions are normal. CAT aims items at about a 50% chance of a correct answer for your current estimated ability, so feeling challenged doesn't mean you're failing.
Source: ASCP BOC, About the Examination.
Official ASCP pages to keep open
- PBT content guideline (PDF) — the full outline. Use it as your checklist.
- PBT suggested reading list — ASCP calls it a partial reference list, not the only source of exam content.
- PBT credential page — eligibility routes, documentation forms, fee, and the application link.
- About the Examination — format, adaptive testing, scoring and results.
Can you study with NHA CPT material?
Partly. The CPT is a separate phlebotomy certification from the National Healthcareer Association, with its own test plan. The underlying skills overlap — order of draw, patient ID and safety don't change between exams — so a good phlebotomy textbook or review helps either way. What doesn't transfer is the map. Organize your prep around the ASCP PBT content guideline, not an NHA outline, and check that you cover the ASCP-specific items in the "Outline items people skip" list, such as coding and billing, fire and radiation safety, breath testing and sweat chloride.
Eligibility at a glance
PBT(ASCP) applicants must meet one route. All education/training and experience routes require high school graduation or equivalent, and most must be completed within the last 5 years.
| Route | Requirement in brief |
|---|---|
| 1 | NAACLS-accredited phlebotomy program completed within 5 years |
| 2 | Two-part structured program within 5 years: 40 clock hours of classroom training plus 100 clock hours of clinical training/orientation, including at least 100 successful unaided venipunctures (apply only after completing it) |
| 3 | 1 year full-time (35 hours/week) clinical phlebotomy experience in an acceptable laboratory within 5 years, including venipunctures and skin punctures |
| 4 | RN, LPN, or other accredited allied health education including phlebotomy training with at least 100 successful unaided blood collections within 5 years |
| 5 | Valid MLS(ASCP) or MLT(ASCP) |
| 6 | Valid DPT(ASCP) plus at least 100 successful unaided non-donor blood collections within 5 years |
| 7 | California Department of Public Health–approved phlebotomy training program within 5 years |
Training outside the U.S.? PBT(ASCPi) has separate routes. Once submitted, the category and route of an application can't be changed — check yours with ASCP's Eligibility Assistant first. For the application steps, documents, and transcripts, see our ASCP exam registration guide.
Source: ASCP BOC, PBT credential page.
If you don't pass
A failing score report breaks your result down by content area, which tells you exactly where to aim the next round. You may test five times under one eligibility route if you still meet its requirements; your next eligibility period starts no earlier than 30 days after the previous exam, and each new application carries a new fee. ASCP says the 30-day timeframe replaced an earlier 90-day wait, so older guides that quote 90 days are out of date. Details: ASCP exam results and ASCP's After the Examination page.
Once you pass, ASCP's post-exam guidance points new credential holders to its Credential Maintenance Program; the official PBT maintenance page gives the current PBT requirements.
Sources: ASCP BOC, About the Examination; After the Examination; Program Directors Guide: The Application Process.
Sources
ASCP Board of Certification (exam rules) — checked November 2, 2026
- Phlebotomy Technician – PBT credential page — eligibility routes, application fee, ASCP vs ASCPi.
- PBT(ASCP) and PBT(ASCPi) Examination Content Guideline, revised September 25, 2025 (PDF) — exam model, content areas and weights, outline.
- About the Examination — format, CAT, scoring scale, results.
- Schedule or Reschedule Your Examination — Pearson scheduling and rescheduling.
- After the Examination — re-applying, attempt limits, CMP reminder.
- PBT suggested reading list
- Program Directors Guide: The Application Process — 30-day retake timeframe replacing the earlier 90-day wait.
Practice and teaching sources 8. WHO Guidelines on Drawing Blood: Best Practices in Phlebotomy, Chapter 2 (2010) 9. WHO Guidelines on Drawing Blood, Chapter 7: Capillary sampling (2010) 10. BD tube guide and recommended order of draw, citing CLSI GP41 (Newcastle Hospitals copy, 2025) 11. BD Vacutainer order of draw and inversion chart (Texas DSHS copy) 12. BD blood collection points to practice, citing CLSI GP41 13. VCU Health Pathology order-of-draw guide (rev. 2/2025) 14. Horizon Health Network Regional Phlebotomy Manual (May 2026) — current tourniquet and capillary-order guidance 15. CAP TODAY Q&A: sodium citrate fill volume 16. ADLM Pearls of Laboratory Medicine: Hyperkalemia 17. Lima-Oliveira et al., "Incorrect order of draw…," Biochemia Medica 2013 18. University of Missouri Health Care laboratory special handling 19. BD tube guide, Oxford University Hospitals NHS 20. OSHA Bloodborne Pathogens Standard, 29 CFR 1910.1030 21. National Cancer Institute dictionary: serum 22. CDC: How the Heart Works 23. CDC "Ready? Set? Test!" (2024) 24. AAFP (FPM, 2006): CMS/CDC waived-testing recommendations 25. VCU Health Pathology: 24-hour urine collection instructions 26. 49 CFR 40.65 (eCFR) 27. Center for Phlebotomy Education: Frequently Asked Questions about Phlebotomy (tourniquet time, citing CLSI) 28. BD tube guide, Gloucestershire Hospitals NHS 29. National Healthcareer Association: Certified Phlebotomy Technician (CPT) 30. Joint Commission: Patient identification FAQ — two identifiers; room number is not an identifier
About this page. Written by the Castleport Test Prep Editorial Team. Exam facts were checked against the ASCP BOC pages above on November 2, 2026; each practice explanation cites the source used to verify its underlying teaching point. Practice items are original and are not actual, recalled, or ASCP-provided exam questions.
Researched and drafted with AI assistance against the official sources listed above. See our methodology and editorial standards.
Independence notice. Castleport Test Prep is an independent exam prep publisher. It is not affiliated with, endorsed by, or approved by the American Society for Clinical Pathology or its Board of Certification. PBT(ASCP), PBT(ASCPi), and other exam and credential names identify the subject of this guide; trademarks belong to their respective owners. Confirm requirements, fees, and policies with ASCP BOC before you apply.