Routine Biochemistry competency quiz 2022

The analyte that is inactivated when exposed to room temperature for more than four hours and is not affected by trace hemolysis is:

LDH

K+

All of the above

The test most frequently used in the monitoring of diabetes, which reflects the average glucose level over the previous several weeks is:

Glucose tolerance test

Weekly fasting glucose

Fasting insulin

Glycohemoglobin A₁C

Which of the following specimens cannot be accepted for accurate calcium or magnesium quantitation?

Serum

Lithium heparin

Sodium heparin

EDTA

Which of the following conditions will affect a person's phosphorus value?

A molar solution contains:

A gm molecular weight of solute per litre of solution

A gm equivalent weight per litre of solution

1000 gm of solute per 1000 mL of solvent

A gm molecular weight of solute per 10 mL of solution

A mole of solute per 10 mL of solvent

One of the following is usually not found in bone:

Calcium

Glucose

Phosphate

Magnesium

Which of the following out-patient results are incompatible with life and must be due to laboratory error or incorrect blood collection?

Analysis of uric acid is used to diagnose:

Gout

Pyelonephritis

Bone cancer

Urinary infection

A potassium level of 6.8 mmol/L is obtained. Before reporting the result, the first step an MLT should take is:

Check the serum for hemolysis

Rerun the test

Check the age of the patient

Simply report out the result

Which of the following electrolytes is the chief plasma cation whose main function is maintaining osmotic pressure:

Chloride

Calcium

Potassium

Sodium

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