What enzyme is a good replacement for alkaline phosphatase so as not to get a high reading from bone disease, pregnancy, or childhood growth?

Valinomycin enhances the selectivity of the electrode used to quantitate

Before unconjugated bilirubin can react with Ehrlich diazo reagent, which of the following must be added?

A new intern calls the laboratory to ask which liver enzymes would be best to assess to differentiate between hepatocellular and cholestatic disease. You respond:

This minor electrolyte is needed in enzyme reactions-muscle contraction, nucleic acid formation, and protein synthesis.

The agent that is used to treat arrhythmias by increasing cardiac contractility is:

An increase in aldosterone has the following regulatory effects on electrolytes in serum:

A patient with the bilirubin test results “increased unconjugated bilirubin, normal conjugated bilirubin, no bilirubin in the urine”, has which of the following bilirubin disturbances?

A 30-year-old female visits her physician with a complaint of excess facial and body hair, weight gain, and oligomenorrhea. She has read online that her symptoms indicate possible Cushing syndrome. Laboratory values indicate plasma cortisol levels within the reference intervals, elevated estrogen, and LH, and decreased FSH. What other disorder might this patient have?

A patient presents with symptoms of fatigue, shortness of breath, edema, and heart palpitations.  A myocardial infarction was ruled out using CK-MB and troponin.  Which of the following tests would support the diagnosis of heart failure?