ورقة عمل القيم المخبرية والشوارد مع الإجابات

A urine dipstick is positive for leukocyte esterase. What does this show?

1. ARed blood cells are present in the urine
2. BProtein is leaking through the glomeruli
3. CWhite blood cells are present in the urine
4. DBilirubin is being passed in the urine

How does active vitamin D (calcitriol) affect calcium?

1. AIt increases calcium absorption from the gut
2. BIt blocks calcium absorption from the gut
3. CIt increases calcium loss in the urine
4. DIt moves calcium out of the blood into cells

What is a main role of albumin in the blood?

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

A patient has weight loss, tremor and heat intolerance. Which thyroid test pattern fits Graves disease?

1. ALow TSH with a high free T₄
2. BNormal TSH with a low free T₄
3. CHigh TSH with a normal free T₄
4. DHigh TSH with a low free T₄

A patient with sickle cell disease takes hydroxyurea. Which laboratory test is monitored regularly for an adverse effect?

1. AUrine ketone level
2. BSerum amylase level
3. CSerum lithium level
4. DComplete blood count

تعداد الكريات البيضاء لدى مريض 16 × 10³/µL مع نسبة عالية من العدلات غير الناضجة (الأشرطة bands). على ماذا يدل ذلك على الأرجح؟

1. Aعدوى جرثومية حادة
2. Bمرض فيروسي مزمن فقط
3. Cنتيجة طبيعية
4. Dفقر دم نقص الحديد

A patient with a stable INR on warfarin starts rifampin (rifampicin) for tuberculosis. Two weeks later the INR is 1,3. What is the most likely explanation?

1. ARifampin speeds up warfarin metabolism
2. BRifampin raises the INR, so it is wrong
3. CTuberculosis causes the INR to fall
4. DRifampin contains a lot of vitamin K

Two sets of blood cultures were taken from separate sites. Only one bottle in one set grows coagulase-negative staphylococci, and the patient has no line or implant. What is the most likely interpretation?

1. ACertain bloodstream infection needing treatment
2. BProbable skin contamination of the sample
3. CInfection with a resistant organism such as MRSA
4. DProof that the patient has infective endocarditis