CSMLS CSMLS Urinalysis and Body Fluids

Question 1

What is the normal specific gravity range of urine in a healthy adult?

Accepted Answer

1.001–1.035

Answer

Normal urine specific gravity ranges from 1.001 to 1.035, reflecting the kidney's ability to concentrate or dilute urine.

Question 2

Bilirubin in urine is detected by the reagent strip and indicates:

Accepted Answer

Liver disease or bile duct obstruction

Answer

Bilirubinuria results from elevated conjugated (direct) bilirubin in the blood, which is filtered by the kidney in liver disease or obstructive jaundice.

Question 3

The presence of nitrite on a urine dipstick suggests:

Accepted Answer

Bacterial urinary tract infection

Answer

Nitrite is produced when certain bacteria (e.g., Gram-negative rods) reduce dietary nitrate, indicating a likely bacterial UTI.

Question 4

Hyaline casts in urine are composed mainly of:

Accepted Answer

Tamm-Horsfall protein

Answer

Hyaline casts are formed from Tamm-Horsfall mucoprotein secreted by renal tubular cells and can be present in low numbers in normal urine.

Question 5

A urine pH of 5.0 would be considered:

Accepted Answer

Acidic

Answer

A urine pH of 5.0 is acidic; normal urine pH ranges from 4.5 to 8.0, with values below 7.0 being acidic.

CSMLS - Canadian Society for Medical Laboratory Science Practice Test

CSMLS - Canadian Society for Medical Laboratory Science Practice Test

CSMLS CSMLS Urinalysis and Body Fluids