The nurse is reviewing laboratory results for a client. Which diagnostic study determines how well blood glucose levels have been controlled in the client?
1. Blood chemistry
2. Capillary blood glucose
3. Hemoglobin A1c
4. Serum electrolytes
Correct Answer: 3
Rationale 1: A blood chemistry is a number of tests performed on blood serum. It can include LDH, CK, and AST.
Rationale 2: The capillary blood glucose is used to determine or monitor blood glucose levels of clients at one point in time but not over time.
Rationale 3: The glycosylated hemoglobin or hemoglobin A1c (HbA1c) is a measurement of blood glucose that is bound to hemoglobin. Hemoglobin A1c is a reflection of how well blood glucose levels have been controlled.
Rationale 4: Serum electrolytes are often routinely ordered for any client admitted to a hospital as a screening test for electrolyte and acid–base imbalances. The most commonly ordered serum tests are for sodium, potassium, chloride, and bicarbonate ions.
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