Lab values & electrolytes worksheet with answers

Thrombocytopenia is usually defined as a platelet count below:

1. A450 × 10³/µL (450 × 10⁹/L)
2. B15 × 10³/µL (15 × 10⁹/L)
3. C1,000 × 10³/µL (1,000 × 10⁹/L)
4. D150 × 10³/µL (150 × 10⁹/L)

A raised alpha-fetoprotein (AFP) in an adult is most closely linked to which cancer?

1. ABladder urothelial cancer
2. BDuctal breast cancer
3. CProstate adenocarcinoma
4. DHepatocellular (liver) cancer

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

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

A patient's potassium is 7.0 mEq/L. Which ECG change would the nurse expect?

1. ATall, peaked T waves
2. BDelta waves before the QRS
3. CProminent U waves
4. DFlattened T waves

In countries that screen all pregnant women (such as the US), a vaginal-rectal swab is taken at about 36–37 weeks. Which organism is it screening for?

1. AGroup B Streptococcus
2. BHepatitis B virus
3. CStaphylococcus aureus
4. DCandida albicans

A patient with schizophrenia is starting clozapine. Which laboratory value must be monitored regularly?

1. ASerum lithium level
2. BAbsolute neutrophil count
3. CSerum amylase
4. DInternational normalized ratio

Which pattern of results fits SIADH?

1. ALow serum sodium, low serum osmolality and concentrated urine
2. BNormal sodium with very dilute urine
3. CLow serum sodium, high serum osmolality and dilute urine
4. DHigh serum sodium, high serum osmolality and very dilute urine

A patient taking an SGLT2 inhibitor has nausea and fast breathing. Glucose 190 mg/dL (10.5 mmol/L), pH 7.15, bicarbonate 10 mEq/L, blood ketones high. What is the most likely diagnosis?

1. ASimple fasting ketosis only
2. BHyperosmolar hyperglycemic state
3. CRespiratory acidosis from COPD
4. DEuglycemic diabetic ketoacidosis