Lembar kerja Nilai laboratorium & elektrolit dengan jawaban

Pemeriksaan darah mana yang biasanya menjadi tes pertama untuk skrining fungsi tiroid?

1. AKalsium serum
2. BThyroid-stimulating hormone (TSH)
3. CKortisol serum
4. DHemoglobin A1c (HbA1c)

Serum creatinine comes mainly from:

1. AThe breakdown of dietary fat in the liver
2. BThe digestion of protein by gut bacteria
3. CThe breakdown of old red cells in the spleen
4. DThe normal breakdown of creatine in muscle

Why is prealbumin (transthyretin) sometimes used to follow a patient's nutritional status instead of albumin?

1. AIt has a long half-life, so it changes over months
2. BIt is not affected by inflammation or liver disease
3. CIt has a short half-life, so it changes within days
4. DIt is measured in urine, so no blood test is needed

Why must vitamin B₁₂ deficiency be ruled out before treating macrocytic anemia with folic acid alone?

1. AFolic acid causes iron overload when B₁₂ levels are low
2. BFolic acid makes B₁₂ deficiency anemia much worse within a few days
3. CFolic acid blocks the absorption of all B₁₂ from the diet
4. DFolic acid can fix the anemia while B₁₂-related nerve damage continues

Which blood collection practice helps prevent hemolysis of the sample?

1. ALeaving the tourniquet on for at least 3 minutes
2. BForcing blood quickly through a needle into the tube
3. CGently inverting the tubes instead of shaking them
4. DUsing the smallest needle available for every patient

A patient is on an IV insulin infusion protocol in the ICU. How often is the blood glucose usually checked?

1. AAbout every hour
2. BOnce every 12 hours
3. COnce a day before breakfast
4. DOnly if symptoms occur

A patient with heavy alcohol use and a poor diet has a hemoglobin of 10,1 g/dL (101 g/L), an MCV of 110 fL and a low red cell folate. Which explanation fits best?

1. AThalassemia trait inherited from one of the parents
2. BIron deficiency from slow, chronic bleeding in the gut
3. CAnemia caused by long-standing chronic kidney disease
4. DFolate deficiency, made worse by a direct alcohol effect

A health care worker's hepatitis B tests show: HBsAg negative, anti-HBs positive, anti-HBc positive. What does this mean?

1. ACurrent chronic hepatitis B infection
2. BNot immune and never exposed to the virus
3. CImmunity from vaccination only, never infected
4. DPast infection that has resolved, with immunity