CMT CMT Urinalysis and Body Fluids

Question 1

Which urine dipstick reagent pad detects glucose via the glucose oxidase reaction?

Accepted Answer

Glucose pad

Answer

The glucose pad uses glucose oxidase to catalyze glucose to gluconic acid and hydrogen peroxide, which then reacts with a chromogen to produce a color change.

Question 2

A urine specific gravity of 1.035 most likely indicates:

Accepted Answer

Concentrated urine

Answer

A specific gravity of 1.035 is above the normal range (1.003–1.030) and indicates highly concentrated urine, often seen in dehydration.

Question 3

Which formed element in urine sediment is pathognomonic for glomerulonephritis?

Accepted Answer

RBC casts

Answer

RBC (red blood cell) casts in urine sediment are characteristic of glomerular inflammation or glomerulonephritis.

Question 4

Bence Jones proteins in urine are best detected by:

Accepted Answer

Heat precipitation at 60°C then redissolving at 100°C

Answer

Bence Jones proteins precipitate at 40–60°C and redissolve when heated to near boiling, distinguishing them from albumin.

Question 5

Which urine color is most associated with myoglobinuria?

Accepted Answer

Red-brown

Answer

Myoglobin released from damaged muscle gives urine a red-brown or cola-colored appearance and tests positive on the dipstick blood pad.

CMT - Certified Medical Technologist Practice Test

CMT - Certified Medical Technologist Practice Test

CMT CMT Urinalysis and Body Fluids