ASCP STUDY GUIDE 18-CHEMISTRY| 243 questions| with complete solutions

Following overnight fasting, hypoglycemia in adults is defined as a glucose of: Correct Answer: <45 mg/dL (<2.5 mmol/L) Diagnosis of hypoglycemia in adults. The following results are from a 21-year-old patient with a back injury who appears otherwise healthy: whole blood glucose: 77 mg/dL (4.2 mmol/L) serum glucose: 88 mg/dL (4.8 mmol/L) CSF glucose: 56 mg/dL (3.1 mmol/L) The best interpretation of these results is that: Correct Answer: all values are consistent with a normal healthy individual The preparation of a patient for standard glucose tolerance testing should include: Correct Answer: a high carbohydrate diet for 3 days If a fasting glucose was 90 mg/dL, which of the following 2-hr postprandial glucose results would most closely represent normal glucose metabolism? Correct Answer: 100 mg/dL (5.5 mmol/L) Normal 2-hour postprandial value. A healthy person with a blood glucose of 80 mg/dL (4.4 mmol/L) would have a simultaneously determined cerebrospinal fluid glucose value of. Correct Answer: 50 mg/dL (2.3 mmol/L) A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75 g carbohydrate dose for an oral glucose tolerance test. The best course of action is to. Correct Answer: draw blood for glucose and discontinue test Use of partial GTT information. Cerebrospinal fluid for glucose assay should be: a refrigerated Correct Answer: analyzed immediately Which of the following 2 hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus? Correct Answer: 200 mg/dL (11.0 mmol/L) Serum levels that define hypoglycemia in pre-term or low birth weight infants are: Correct Answer: lower than adults A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL (5.2 mmol/L) and a 2-hr postprandial glucose concentration of 105 mg/dL (5.8 mmol/L). The statement which best describes this patient's fasting serum gl