Lab values & electrolytes worksheet with answers

What does a "culture and sensitivity" test of a sample show?

1. AThe amount of antibiotic in the patient's blood
2. BWhether the patient is allergic to an antibiotic
3. CHow many white cells are present in the sample
4. DWhich organism grows and which antibiotics work on it

Which HbA1c value meets the usual diagnostic threshold for diabetes?

1. A5.0% (31 mmol/mol) or higher
2. B5.5% (37 mmol/mol) or higher
3. C6.5% (48 mmol/mol) or higher
4. D4.5% (26 mmol/mol) or higher

What is the difference between serum and plasma?

1. ASerum contains all the red cells, while plasma contains none
2. BPlasma is the fluid left after blood clots, without fibrinogen
3. CSerum and plasma are two names for exactly the same fluid
4. DSerum is what is left after blood clots, minus clotting factors

A patient on carbamazepine becomes confused and has a headache. Which laboratory result would most likely explain this?

1. AA high serum calcium
2. BA low serum magnesium
3. CA high serum potassium
4. DA low serum sodium

A patient has had severe watery diarrhea for 4 days. Which laboratory pattern would the nurse expect?

1. ALow glucose and high magnesium
2. BLow potassium and low bicarbonate
3. CHigh potassium and high bicarbonate
4. DHigh sodium and high calcium

A patient with acute pancreatitis has muscle twitching and numbness around the mouth. Which laboratory value should the nurse check?

1. ASerum calcium
2. BSerum amylase
3. CSerum chloride
4. DSerum sodium

A patient without symptoms has a finger-stick glucose of 340 mg/dL (18.9 mmol/L). The previous values were normal, and the patient has just peeled an orange. What should the nurse do first?

1. AAsk the laboratory to measure HbA1c from the same drop of blood
2. BGive a correction dose of insulin for a glucose of 340 mg/dL
3. CHave the patient wash and dry their hands, then repeat the test
4. DReport the result as a new diagnosis of diabetes mellitus

A young man has a swollen knee after minor trauma. His aPTT is prolonged, but his PT/INR and platelet count are normal. Which condition fits best?

1. AVitamin K deficiency from poor diet
2. BImmune thrombocytopenia (ITP)
3. CHemophilia A (factor VIII deficiency)
4. DDisseminated intravascular coagulation