ورقة عمل القيم المخبرية والشوارد مع الإجابات

About what proportion of total serum calcium is in the free (ionized) form?

1. AAlmost none
2. BAbout half
3. CNearly all
4. DAbout one tenth

Which blood test is the usual measure of a person's vitamin D status?

1. AParathyroid hormone
2. B25-hydroxyvitamin D
3. CSerum phosphate
4. D1,25-dihydroxyvitamin D

What is a main role of albumin in the blood?

1. AIt carries oxygen from the lungs to the tissues
2. BIt forms the mesh that holds a blood clot together
3. CIt fights bacteria by engulfing them in the blood
4. DIt holds fluid in the vessels by oncotic pressure

A patient takes high-dose furosemide. Besides potassium, which electrolyte is most commonly lowered?

1. AMagnesium
2. BPhosphate
3. CUric acid
4. DSodium bicarbonate

How should a blood sample for serum ammonia be handled?

1. APlaced on ice and sent to the laboratory at once
2. BShaken firmly to mix it before it is sent away
3. CLeft at room temperature for several hours first
4. DKept warm and sent with the next routine batch

A patient taking empagliflozin (an SGLT2 inhibitor) has glucose in the urine but a normal blood glucose. What is the best interpretation?

1. AUncontrolled diabetes needing insulin
2. BA sign of kidney failure
3. CAn expected effect of the drug
4. DA urinary tract infection

Which set of results most strongly suggests hemolytic anemia?

1. ALow hemoglobin, low platelets, low white cells, low reticulocytes
2. BLow hemoglobin, high reticulocytes, high unconjugated bilirubin, high LDH
3. CLow hemoglobin, low reticulocytes, low MCV, low ferritin
4. DLow hemoglobin, high MCV, low vitamin B₁₂, normal bilirubin

The nurse teaches a patient with thrombocytopenia (platelets 25 × 10³/µL) about home safety. Which statement shows a need for further teaching?

1. A"I'll use a soft-bristled toothbrush"
2. B"I'll use an electric razor to shave"
3. C"I'll take aspirin if I get a headache"
4. D"I'll blow my nose gently, not forcefully"