Specialty Certified Medical Assistant Laboratory Procedures and Diagnostics

Question 1

What does the acronym 'CLIA' stand for in the context of medical laboratory regulations?

Accepted Answer

Clinical Laboratory Improvement Amendments

Answer

CLIA (Clinical Laboratory Improvement Amendments) establishes quality standards for all laboratory testing in the US to ensure accurate, reliable results.

Question 2

Which type of microscopy is used to examine unstained specimens by varying the refractive index between the specimen and surrounding medium?

Accepted Answer

Phase-contrast microscopy

Answer

Phase-contrast microscopy enhances contrast in transparent specimens by exploiting differences in refractive index, making unstained living cells visible.

Question 3

A urine dipstick test shows positive nitrites. What does this finding most likely indicate?

Accepted Answer

Bacterial infection in the urinary tract

Answer

Positive nitrites on a urine dipstick indicate the presence of bacteria that convert urinary nitrates to nitrites, suggesting a urinary tract infection.

Question 4

What is the normal fasting blood glucose range for an adult?

Accepted Answer

70-99 mg/dL

Answer

Normal fasting blood glucose for an adult is 70-99 mg/dL; values of 100-125 mg/dL indicate prediabetes, and ≥126 mg/dL indicates diabetes.

Question 5

Which laboratory test measures the percentage of red blood cells in a blood sample?

Accepted Answer

Hematocrit

Answer

Hematocrit (HCT) measures the proportion of blood volume occupied by red blood cells, expressed as a percentage.

Specialty Certified Medical Assistant Practice Test

Specialty Certified Medical Assistant Practice Test

Specialty Certified Medical Assistant Laboratory Procedures and Diagnostics