NHA CPT vs ASCP PBT: Which Phlebotomy Certification?

Both exams take 2 hours. The NHA CPT has 120 questions (100 scored) and 390 of 500 passes. The ASCP PBT has 80 adaptive questions and 400 of 999 passes. NHA asks for 30 venipunctures and 10 capillary sticks to qualify; ASCP offers seven eligibility routes.

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Checked November 6, 2026 against NHA and ASCP · Not affiliated with either

NHA CPTASCP PBT

Questions12080

Time2 h2 h

FormatFixed, 5 areasAdaptive

To pass390 of 500400 of 999

Pass rate77.31% (2022)Not checked

Side by side

NHA CPT vs ASCP PBT exam comparison

Every line links to the NHA or ASCP page it comes from.

NHA CPTASCP PBT

CredentialNHA CPTCertified Phlebotomy Technician (CPT), National Healthcareer Association.ASCP PBTPhlebotomy Technician, PBT(ASCP), ASCP Board of Certification. Source

QuestionsNHA CPT120: 100 scored and 20 unscored pretest items. SourceASCP PBT80, multiple choice with four options. Source

TimeNHA CPT2 hours. SourceASCP PBT2 hours. Source

Passing scoreNHA CPTScaled score; 390 out of 500 passes. SourceASCP PBTComputerized adaptive test, scaled 100 to 999; 400 passes. Source

Pass rateNHA CPT77.31% of 47,313 CPT exams in 2022. SourceASCP PBTNot shown: we could not check a current PBT figure.

What it coversNHA CPTSafety and compliance 26%, Patient preparation 20%, Routine blood collections 28%, Special collections 12%, Processing 14%. SourceASCP PBTSet by the ASCP PBT content guideline, linked from the PBT page. Source

EligibilityNHA CPTHigh school diploma or GED, plus a training program or one year of supervised phlebotomy work in the past three years, plus at least 30 venipunctures and 10 capillary or finger sticks on live people. SourceASCP PBTOne of seven routes: high school plus a NAACLS program, a structured program, clinical experience, or RN/LPN or other training; an existing ASCP certification; or a California-approved program. Source

Application feeNHA CPT$134, non-refundable. SourceASCP PBT$155, non-refundable. Source

If you failNHA CPTWait 30 days after a first or second attempt and 12 months after a third; you pay each time. SourceASCP PBTReapply and pay again; the new window opens 30 days after your last exam; five attempts per eligibility route. Source

RenewalNHA CPTEvery two years, with 10 continuing education credits and a fee. SourceASCP PBTThrough the ASCP Credential Maintenance Program (CMP). Source

Next: How to choose

How to choose

Which phlebotomy certification should you get?

Difficulty rarely decides it. Your job market, your training and your next step do.

Start with job postsIf the hospitals and labs near you name one credential, take that one. Many posts accept either.
Match your trainingA NAACLS or California-approved program points to an ASCP route. Many short phlebotomy courses prepare you for the NHA CPT and log the 30 venipunctures and 10 sticks it asks for.
Think about the next stepASCP also certifies lab assistants, technicians and scientists (MLA, MLT, MLS), so the PBT sits on a laboratory career path.
Check your stateA national certificate is not a state license. A few states license phlebotomists themselves, so check your state health department too.

Next: Practice for either

Practice for either

Phlebotomy practice for the CPT or PBT

Both exams test the same core skills: safety, patient identification, venipuncture, the order of draw, special collections and specimen processing.

NHA CPT vs ASCP PBT FAQ

Difficulty, passing scores, employers and licenses.

Is the NHA CPT or the ASCP PBT harder?

In 2022, 77.31% of the 47,313 NHA CPT exams given were passes (NHA Annual Pass Rates report); we could not check a current ASCP PBT figure. The PBT is shorter (80 questions against 120) but adaptive, so the questions adjust to your level. The CPT has a fixed outline of five weighted areas. Most people find the deciding factor is which one their employer asks for, not difficulty.

What score do you need to pass each exam?

NHA scores the CPT on a scale and 390 out of 500 passes (NHA Annual Pass Rates report). ASCP scores the PBT from 100 to 999 and 400 passes (ASCP BOC, about the examination). Neither is a percentage of questions right.

Do employers accept both?

Both are national certifications and many job posts accept either. Some hospitals and labs name one. Read the posts in your area before you pay a fee.

Which needs more blood draws to qualify?

NHA asks for evidence of at least 30 venipunctures and 10 capillary or finger sticks on live people. ASCP's routes each have their own training or experience rules, listed on its PBT page, so check the route that fits you.

Is a national certification a state license?

No. NHA says its eligibility rules are separate from any state's rules to practice. A few states license phlebotomists themselves, so check your state health department as well.

Can I take both?

Yes, if you meet each body's eligibility. Each has its own application, fee and renewal.

Method: we read each linked NHA and ASCP page on November 6, 2026; the NHA passing score and pass rate come from NHA’s Annual Pass Rates report, and the NHA fee ($134) was read on the official NHA store on November 10, 2026. Fees and rules change, so check with NHA or ASCP before you apply. Written and checked by the QuizCram editorial team. QuizCram is not affiliated with NHA or ASCP.