ورقة عمل القيم المخبرية والشوارد مع الإجابات

What is a typical adult reference range for total serum bilirubin?

1. AAbout 3–12 mg/dL (51–205 µmol/L)
2. BAbout 10–20 mg/dL (171–342 µmol/L)
3. CAbout 0,3–1,2 mg/dL (5–21 µmol/L)
4. DAbout 0,03–0,1 mg/dL (0,5–1,7 µmol/L)

What is a typical adult reference range for serum bicarbonate (total CO₂) on a metabolic panel?

1. AAbout 8–12 mEq/L
2. BAbout 35–45 mEq/L
3. CAbout 22–28 mEq/L
4. DAbout 98–106 mEq/L

A patient has a hemoglobin of 19,5 g/dL (195 g/L) and a hematocrit of 58%. Which term describes this?

1. APancytopenia (all cells low)
2. BIron-deficiency anemia
3. CThrombocytopenia (low platelets)
4. DPolycythemia (erythrocytosis)

أي تغير في تخطيط كهربية القلب يرتبط بنقص كالسيوم الدم؟

1. Aتقصير الفاصل QT
2. Bموجة دلتا بارزة
3. Cإطالة الفاصل QT
4. Dموجات T عالية مدببة

A patient has started parenteral nutrition (PN) through a central line. Which test is monitored most frequently in the first days?

1. AThyroid hormones
2. BBlood glucose
3. CHemoglobin A1c
4. DSerum lipase

A healthy patient's result is slightly outside the laboratory reference range, and all other results are normal. Which statement best explains why this can happen?

1. AReference ranges are the same in every laboratory worldwide
2. BReference ranges include every healthy person without exception
3. CRanges cover about 95% of healthy people, so some fall outside
4. DAny result outside the range always means disease is present

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. AProof that the patient has infective endocarditis
2. BInfection with a resistant organism such as MRSA
3. CCertain bloodstream infection needing treatment
4. DProbable skin contamination of the sample

After a crush injury, a patient's urine dipstick is strongly positive for blood, but microscopy shows almost no red cells. CK is very high. What best explains this?

1. AThe sample was contaminated with menstrual blood
2. BBleeding is coming from the bladder lining
3. CA kidney stone is scraping the ureter lining
4. DMyoglobin from damaged muscle is in the urine