Laboratory Science Urinalysis and Body Fluids 2

Question 1

What does the urine protein/creatinine ratio (UPCR) measure?

Accepted Answer

Degree of proteinuria, used to monitor glomerular damage

Answer

Kidney stone risk

Answer

Urinary glucose reabsorption

Answer

Tubular secretion capacity

Question 2

Bence-Jones proteins in urine are most associated with which malignancy?

Accepted Answer

Multiple myeloma

Answer

Renal cell carcinoma

Answer

Bladder cancer

Answer

Prostate cancer

Question 3

What does a urine specific gravity of 1.001 suggest?

Accepted Answer

Very dilute urine, possibly from excessive water intake or diabetes insipidus

Answer

Severe dehydration

Answer

Concentrated urine from water restriction

Answer

Normal finding in adults

Question 4

Which analysis of pleural fluid distinguishes a transudate from an exudate?

Accepted Answer

Light's criteria: fluid/serum protein ratio, LDH ratio, and absolute LDH

Answer

Color and turbidity only

Answer

Cell count alone

Answer

pH level only

Question 5

What is the significance of urobilinogen in urine?

Accepted Answer

Reflects enterohepatic circulation of bilirubin; elevated in hemolysis or hepatic disease

Answer

Indicates urinary tract infection

Answer

Present only in diabetic patients

Answer

Marker of acute kidney injury

Question 6

Which cell type predominates in viral meningitis CSF analysis?

Accepted Answer

Lymphocytes

Answer

Neutrophils

Answer

Eosinophils

Answer

Monocytes