What is the passing score for the NHA phlebotomy exam?

390 on a scaled score range of 200 to 500. The exam has 120 questions, 100 of which are scored, and a 2-hour time limit.

What score do you need to pass the ASCP phlebotomy exam?

A scaled score of 400. The ASCP PBT is a computer adaptive test with 80 questions in 2 hours, so the score depends on the difficulty of the questions you answer correctly.

What is the passing score for the AMT RPT exam?

70 on a scaled range of 0 to 100. That is not 70% of the questions; the exam has 200 scored questions and a 2.5-hour time limit.

Is 390 on the NHA CPT a percentage?

No. NHA reports a scaled score so that the different exam forms it rotates are comparable. You cannot convert it directly into a number of correct answers.

Phlebotomy Exam Passing Scores

The NHA CPT passing score is 390 (on a 200–500 scale), the ASCP PBT passing score is 400, and the AMT RPT passing score is 70 (on a 0–100 scale). All three are scaled scores, not the percentage of questions you got right.

Checked against each certifying body's own documents on October 6, 2026.

	NHA CPT	ASCP PBT	AMT RPT
Passing score	390	400	70
Score scale	Scaled score from 200 to 500	Scaled score	Scaled score from 0 to 100
Questions	120 questions: 100 scored and 20 unscored pretest items	80 multiple-choice questions	200 scored questions (AMT exams may also include unscored pretest items)
Time limit	2 hours	2 hours	2.5 hours
Format	Fixed form (NHA rotates several equivalent forms; it is not adaptive)	Computer adaptive (CAT): question difficulty adjusts to your answers	Computer-based at a Pearson VUE test center; everyone takes the full exam
Published pass rate	Not published	Not published	81% in 2025 (1,976 candidates), 81% in 2024, 83% in 2023

Common questions

What is the passing score for the NHA phlebotomy exam?: 390 on a scaled score range of 200 to 500. The exam has 120 questions, 100 of which are scored, and a 2-hour time limit.
What score do you need to pass the ASCP phlebotomy exam?: A scaled score of 400. The ASCP PBT is a computer adaptive test with 80 questions in 2 hours, so the score depends on the difficulty of the questions you answer correctly.
What is the passing score for the AMT RPT exam?: 70 on a scaled range of 0 to 100. That is not 70% of the questions; the exam has 200 scored questions and a 2.5-hour time limit.
Is 390 on the NHA CPT a percentage?: No. NHA reports a scaled score so that the different exam forms it rotates are comparable. You cannot convert it directly into a number of correct answers.

Policies change. Confirm with the certifying body before you schedule or retake an exam.

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Phlebotomy Exam Passing Scores

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