The primary serum test to screen for thyroid disease is:

A hospital patient is receiving amikacin for her Enterobacter infection, which seems to be resistant to all other antibiotics. Her physician is somewhat unfamiliar with the antibiotic and wants to know what laboratory analyses can be performed to assess this antibiotic’s efficacy and risk of toxicity. You suggest:

Which method of analysis will provide the most accurate electrolyte results if a grossly lipemic sample is used?

1,25(OH)2D, also known as 1,25-dihydroxy vitamin D, is the best blood test for determining adequacy of Vitamin D stores in the body.

Upon receipt of a test request for assay of human chorionic gonadotropin (hCG) on a 60-year-old male, you would:

An 80-year-old patient visits his physician with an elevated serum iron value and a decreased TIBC. The most likely diagnosis in this case is:

Hyperproteinemia is caused by:

Immobilized enzymes are used analytically in various electrochemical techniques. The use of an ion-selective electrode that is coated with an enzyme that produces ions when placed in a substrate solution is a type of:

The kidneys compensate for respiratory alkalosis by (excretion, retention) of bicarbonate and (increased, decreased) excretion of NaH2PO4.

Regarding internal quality control (QC) for a bench top analyzer: