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Applicants for certification as MT(AAB), MLT(AAB), POLT(AAB), and PBT(AAB) are subject to successful completion of the appropriate AAB Board of Registry examination(s). 

There are two (2) ways to challenge the MT(AAB) examination: by Discipline OR as a Generalist. 

Applicants challenging the MT(AAB) certification examination by discipline must successfully pass an examination in Basic Knowledge AND an examination in at least one (1) discipline to become certified. If you choose this route, only failed examinations must be retaken.  

Applicants challenging the MT(AAB) Generalist or MLT(AAB) Generalist certification examinations must successfully pass an examination covering basic knowledge AND the following individual disciplines: chemistry, hematology, immunology, immunohematology and microbiology. 

The Generalist examination differs from the examinations offered for individual disciplines. Applicants who challenge the Generalist examination are required to meet a minimum score in each of the disciplines AND a minimum overall score. Failing in any one (1) area requires retaking the entire Generalist examination. 

Applicants challenging the POLT(AAB) and PBT(AAB) certification examinations must successfully pass an examination covering general information consistent with the knowledge required to perform physician office laboratory work or phlebotomy. The POLT(AAB) and PBT(AAB) certification examinations are not divided into basic knowledge and disciplines. If you fail the POLT(AAB) or PBT(AAB) examinations, you must retake the entire POLT(AAB) or PBT(AAB) examinations.


Acceptance of Other Certifying and Licensing Examinations 

The AAB Board of Registry only recognizes examinations administered by the AAB Board of Registry.