Lab values & electrolytes worksheet with answers

Using American Diabetes Association (ADA) criteria, which HbA1c range is classed as prediabetes?

1. A5.7–6.4% (39–47 mmol/mol)
2. B8.0–9.0% (64–75 mmol/mol)
3. C4.0–5.6% (20–38 mmol/mol)
4. D6.5–7.5% (48–58 mmol/mol)

Lactate is mainly produced when cells:

1. ABreak down fat completely with oxygen
2. BBreak down protein in the liver for energy
3. CStore glucose as glycogen in the muscles
4. DBreak down glucose without enough oxygen

Serum amylase is less specific than lipase for pancreatitis because amylase also comes from:

1. AThe bone marrow
2. BThe heart muscle
3. CThe thyroid gland
4. DThe salivary glands

A patient on warfarin for atrial fibrillation has an INR of 1.4. What does this mean?

1. AAnticoagulation is below target, so clots and stroke are more likely
2. BThe patient no longer needs to take warfarin
3. CThe patient is at a high risk of bleeding and needs vitamin K at once
4. DThe dose is exactly right and needs no change

An older adult with chronic kidney disease takes glyburide (glibenclamide, a sulfonylurea) and has repeated low glucose readings. Why is this a concern?

1. AThe drug causes high potassium that lowers the glucose
2. BThe drug and its metabolites build up and cause long lows
3. CThe drug stops working entirely when the kidneys fail
4. DThe drug makes the glucose meter read falsely low

How should a patient collect a clean-catch midstream urine sample?

1. AClean the area, start voiding into the toilet, then catch the middle part
2. BCollect the very first urine of the stream directly in the sterile cup
3. CCollect urine from the toilet bowl after voiding into the toilet
4. DFill the cup completely, then add tap water if there is not enough

A patient took a large overdose of acetaminophen (paracetamol) 24 hours ago. Which laboratory changes are most expected?

1. AA very high ALT and AST and a rising INR
2. BA high troponin with a normal ALT
3. CA low white count with normal liver tests
4. DA low ALT and AST and a low INR

A patient on clozapine for 2 years has been stable. Which statement shows a need for further teaching?

1. A"I'll report a sore throat or fever at once"
2. B"I can stop my blood tests since I feel well"
3. C"I'll keep all my scheduled blood test visits"
4. D"I'll tell other doctors that I take clozapine"