Common chemistry analytes, reference ranges, and enzyme and electrolyte panels tested on ASCP clinical chemistry sections.
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- What is the normal fasting blood glucose reference range?
- Approximately 70 to 99 mg/dL
- What enzyme is most specific for pancreatic injury?
- Lipase
- Besides lipase, what other enzyme rises with pancreatitis?
- Amylase
- Which enzyme is most liver-specific for hepatocellular injury?
- Alanine aminotransferase (ALT)
- Which enzyme rises with both liver and heart or muscle injury?
- Aspartate aminotransferase (AST)
- Which enzyme is elevated in cholestatic liver disease and bone disorders?
- Alkaline phosphatase (ALP)
- What enzyme helps distinguish a liver source of elevated ALP from a bone source?
- Gamma-glutamyl transferase (GGT)
- Which cardiac biomarker is most specific for myocardial infarction?
- Cardiac troponin (I or T)
- What is creatine kinase-MB (CK-MB) used to assess?
- Myocardial injury, though less specific than troponin
- What is BNP (B-type natriuretic peptide) used to diagnose?
- Heart failure
- What is the normal reference range for serum sodium?
- Approximately 135 to 145 mEq/L
- What is the normal reference range for serum potassium?
- Approximately 3.5 to 5.0 mEq/L
- What condition results from severely elevated serum potassium?
- Hyperkalemia, which can cause life-threatening cardiac arrhythmias
- What is the anion gap used to evaluate?
- Unmeasured anions in the blood, helpful in classifying metabolic acidosis
- Which two analytes, along with creatinine, are used to assess kidney function?
- Blood urea nitrogen (BUN) and glomerular filtration rate (GFR)