Lab values & electrolytes worksheet with answers

What is a typical adult reference range for the platelet count?

1. AAbout 1000–2000 × 10³/µL (1000–2000 × 10⁹/L)
2. BAbout 12–16 × 10³/µL (12–16 × 10⁹/L)
3. CAbout 4.5–11 × 10³/µL (4.5–11 × 10⁹/L)
4. DAbout 150–400 × 10³/µL (150–400 × 10⁹/L)

What is a typical adult reference range for serum creatinine?

1. AAbout 10–20 mg/dL
2. BAbout 3.5–5.0 mg/dL
3. CAbout 0.6–1.2 mg/dL
4. DAbout 135–145 mg/dL

A low mean corpuscular hemoglobin concentration (MCHC) means that the red cells are:

1. AMore numerous than normal
2. BPaler than normal (hypochromic)
3. CShaped like a sickle
4. DLarger than normal (macrocytic)

A patient on a heparin infusion has blood in the urine and an aPTT far above the target. The nurse stops the infusion and informs the provider. Which antidote should the nurse anticipate?

1. AProtamine sulfate
2. BCalcium gluconate
3. CVitamin K (phytonadione)
4. DNaloxone

Which instruction is correct for a patient taking an oral potassium chloride supplement?

1. ATake it on an empty stomach with only a small sip of water to speed absorption
2. BUse a salt substitute as well, so less of the tablet is needed each day
3. CTake it with food and a full glass of water, and do not crush extended-release tablets
4. DCrush the extended-release tablets and mix them with a little water if needed

Which instruction is correct for a patient starting oral iron tablets?

1. ATake the tablet with an antacid to improve absorption
2. BYour stools may turn dark green or black
3. CYour urine will turn bright orange while you take it
4. DTake each tablet with milk to protect the stomach

A patient with long-standing rheumatoid arthritis has a hemoglobin of 10.5 g/dL (105 g/L), a low serum iron, a low total iron-binding capacity (TIBC) and a high-normal ferritin. Which condition fits best?

1. AIron-deficiency anemia
2. BVitamin B₁₂ deficiency anemia
3. CAnemia of chronic disease (inflammation)
4. DAcute blood loss anemia

A patient with a calcium of 6.8 mg/dL (1.7 mmol/L) suddenly develops noisy breathing and a hoarse voice. What does this suggest?

1. ALaryngospasm, an emergency needing urgent help and IV calcium
2. BA common cold that started this morning
3. CAnxiety about the blood results, which needs calm reassurance
4. DA normal response that will pass without treatment