RMA Microbiology and Specimen Collection 2

Question 1

What is the recommended order of draw for venipuncture when collecting multiple tubes?

Accepted Answer

Blood culture, coagulation, serum, heparin, EDTA, glycolytic inhibitor

Answer

The correct order is blood culture first, then coagulation (light blue), serum (red/SST), heparin (green), EDTA (lavender), and glycolytic inhibitor (gray).

Question 2

Which specimen is the gold standard for diagnosing a urinary tract infection?

Accepted Answer

Clean-catch midstream urine

Answer

A clean-catch midstream specimen minimizes contamination from skin and genital flora, making it ideal for urine culture.

Question 3

A throat swab for strep testing should be collected from which area?

Accepted Answer

The tonsils and posterior pharynx

Answer

The swab should contact the tonsillar areas and posterior pharynx where Streptococcus is most likely present.

Question 4

What term describes microorganisms that require oxygen to grow?

Accepted Answer

Aerobes

Answer

Aerobes require oxygen for metabolism and growth.

Question 5

Which container additive is used to preserve a stool specimen for ova and parasite examination?

Accepted Answer

Formalin or PVA fixative

Answer

Formalin and polyvinyl alcohol (PVA) preserve parasite morphology in stool specimens.

RMA Practice Test

RMA Practice Test

RMA Microbiology and Specimen Collection 2