ASCP MLA study guide
ASCP MLA · Work through your exam, one topic at a time.
The ASCP Board of Certification (BOC) Medical Laboratory Assistant (MLA) credential is an entry-level certification for people who perform the preanalytical and support tasks that keep a clinical laboratory running: collecting and processing specimens, preparing samples for testing, performing limited or waived testing under supervision, and handling the clerical and quality tasks that surround them. It is typically pursued by phlebotomy and laboratory assistant students, laboratory aides already working in a hospital or reference laboratory, and personnel in physician office laboratories or donor collection settings who want a recognized credential to support hiring and career movement. The ASCP MLA study guide has 5 sections and about 1,422 words.
01Specimen Collection and Processing
Specimen collection is an analytical step, not a clerical one. Candidates must know the CLSI order of draw for venous blood: blood culture bottles, sodium citrate (light blue), serum tube with or without clot activator/gel (red, gold, tiger), heparin (green), EDTA (lavender), glycolytic inhibitor (gray), and other additives.
349 words, about 2 min02Hematology
The CBC combines impedance or optical counting with clinical correlation. Understand RBC indices (MCV, MCH, MCHC), RDW, reticulocyte count, and the WBC differential.
273 words, about 1 min03Clinical Chemistry
Clinical chemistry questions reward understanding of spectrophotometry, the Beer-Lambert law, reagent stability, calibration, and interference. Hemolysis releases potassium, LDH, and AST; it also interferes with many colorimetric assays.
255 words, about 1 min04Microbiology
Microbiology results depend on site, timing, and contamination control. Blood cultures should be drawn before antibiotics when possible, with adequate volume per bottle; volume is a major sensitivity factor.
288 words, about 1 min05Laboratory Operations and Quality
Laboratory operations questions test the difference between quality control, calibration, and proficiency testing. Calibration establishes the analyzer's response curve; QC monitors ongoing performance; proficiency testing evaluates the laboratory against peers.
257 words, about 1 min