ASCP Urinalysis and Body Fluids 2

Question 1

Normal CSF glucose is approximately what percentage of simultaneous serum glucose?

Accepted Answer

60–70%

Answer

20–30%

Answer

90–100%

Answer

10–15%

Question 2

Red blood cells in CSF that do NOT lyse (xanthochromia present) after centrifugation indicate:

Accepted Answer

Subarachnoid hemorrhage

Answer

Traumatic tap

Answer

Normal finding in elderly

Answer

Viral meningitis

Question 3

A pleural fluid LDH >200 IU/L and pleural/serum LDH ratio >0.6 classifies the fluid as:

Accepted Answer

Exudate

Answer

Transudate

Answer

Chylous effusion

Answer

Normal pleural fluid

Question 4

Which crystal found in joint fluid under polarized light appears yellow when parallel to the compensator and is seen in gout?

Accepted Answer

Monosodium urate crystals (strongly negative birefringence)

Answer

Calcium pyrophosphate crystals (weakly positive birefringence)

Answer

Cholesterol crystals

Answer

Calcium oxalate crystals

Question 5

Semen analysis showing <10 million motile sperm per mL is classified as:

Accepted Answer

Oligospermia with asthenospermia

Answer

Normal

Answer

Azoospermia

Answer

Hyperspermia

Question 6

A peritoneal fluid with >250 PMN cells/µL is diagnostic of:

Accepted Answer

Spontaneous bacterial peritonitis (SBP)

Answer

Transudative ascites

Answer

Malignant ascites

Answer

Cirrhotic ascites without infection