Intensive Recap

Question 1

Pathologic cause of red urine: (3)

Answer 1

Hemoglobin, myoglobin, and porphyrin

Question 2

A brown black pigment in acid urine can be caused by:

Answer 2

Melanin

Question 3

Excreted by renal tubules in small quantities:

Answer 3

Tamm-Horsfall protein

Question 4

What test is least affected by standing of improperly stored urine:

Answer 4

Protein (⬆️ pH; ⬇️ Glucose, Bilirubin)

Question 5

Hemoglobin in urine can be differentiated from myglobin using:

Answer 5

80% ammonium sulfate to precipitate hemoglobin

Question 6

The ova of which parasite may be found in the urinary sediment?

Answer 6

Schistosoma haematobium

Question 7

In renal tubular acidosis (metabolic acidosis), the pH of the urine is:

Answer 7

Consistently alkaline

Question 8

A sediment with moderate hematuria and RBC casts mos glikelh results from:

Answer 8

Acute glomerulonephritis

Question 9

Urine sediment characterized by pyuria with bacteria and WBC casts indicates:

Answer 9

Chronic pyelonephritis

Question 10

Oval fat bodies are derived from:

Answer 10

Renal tubular epithelium

Question 11

This test is based on the inverse Ehrlich’s rxn (i.e. maintaining an acid solution by adding small urine volume to a relatively large reagent volume) eliminating the problem of urobilinogen rxn:

Answer 11

Hoesch

Question 12

All of the ff. may produce false-negative reaction for urine reagent strip test for blood, EXCEPT:

Answer 12

Vegetable and bacterial peroxidases

Question 13

Regarding CSF, all of the ff. are indication of a traumatic tap, EXCEPT:

Answer 13

Presence of a clot in the sample

Question 14

Pronounced reduction of CSF glucose can be seen in the following conditions, EXCEPT:

Answer 14

Viral meningitis (N glucose + lactate)

Question 15

A transudative effusion is usually caused by all of the ff., EXCEPT:

Answer 15

Malignancy

Question 16

Useful adjunct test for tuberculous pericarditis in cases with negative stains when tuberculosis is suspected:

Answer 16

Adenosine deaminase activity

Question 17

What test is best for determining the status if the fetoplacental unit?

Answer 17

Serum free estriol

Question 18

The best available guide in the assessment of gestational age is the amniotic fluid determination of:

Answer 18

Creatinine

Question 19

In the APT test, maternal hemoglobin will produce:

Answer 19

Yellow-brown supenatant after standing for 2 minutes

Question 20

Due to variability in bowel habbits, the most representative timed fecal samole is:

Answer 20

3-day collection

Question 21

A reflection of the concentrating and diluting power of the renal tubules:

Answer 21

Specific gravity

Question 22

If a kidney can’t concentrate or dilute, we would expect that the urine sample will always be:

Answer 22

Isosthenuria

Question 23

Turbidity due to this may be removed by warming:

Answer 23

Urates

Question 24

Ideal preservative for urine tested for VMA:

Answer 24

HCl (VMA: pheochromocytoma; adrenal)