ورقة عمل القيم المخبرية والشوارد مع الإجابات

Which body system shows the main symptoms of a low serum sodium?

1. AThe eyes only
2. BThe skeleton
3. CThe skin and hair
4. DThe nervous system

What is a typical reference range for the hematocrit in an adult woman?

1. AAbout 35–45%
2. BAbout 55–65%
3. CAbout 10–15%
4. DAbout 20–28%

Where is urea, measured as blood urea nitrogen (BUN), made?

1. AIn the muscles, from the breakdown of creatine
2. BIn the liver, from the breakdown of protein
3. CIn the bone marrow, from old red blood cells
4. DIn the kidneys, from the breakdown of glucose

When several samples are drawn at the same venipuncture, which tubes or bottles are filled first?

1. ABlood culture bottles
2. BEDTA (complete blood count) tubes
3. CCoagulation (citrate) tubes
4. DFluoride (glucose) tubes

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

1. Aفقر دم نقص الحديد
2. Bعدوى جرثومية حادة
3. Cنتيجة طبيعية
4. Dمرض فيروسي مزمن فقط

A patient's potassium is unexpectedly 5,8 mEq/L. The sample was taken after the tourniquet was on for several minutes while the patient pumped their fist. What is the best interpretation?

1. ATourniquet time affects only the glucose result, not the potassium
2. BThe result may be falsely high and should be repeated with better technique
3. CThe result confirms true hyperkalemia and needs no further checking
4. DFist pumping lowers potassium, so the true level is even higher

A patient's total calcium is 7,6 mg/dL and the albumin is 2,0 g/dL. Using the common correction (add 0,8 mg/dL for each 1 g/dL that albumin is below 4,0), what is the corrected calcium?

1. A11,6 mg/dL, above the normal range
2. B6,0 mg/dL, well below the normal range
3. C9,2 mg/dL, within the normal range
4. D7,6 mg/dL, below the normal range

A patient has a positive hepatitis C antibody (anti-HCV) test. What is the most appropriate next step?

1. ATell the patient they definitely have chronic hepatitis C
2. BGive hepatitis C vaccine to prevent further infection
3. CTest for HCV RNA to find out whether infection is current
4. DRepeat the antibody test, as a positive test is always false