C-peptide, fasting — lab reference
In the reference guideInterpret with concurrent glucose, kidney function, and exogenous insulin use.
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What’s searchable?Vitamin C, plasma — lab reference
Some search terms matchedHighly preanalytic-sensitive. Fasting, processing, and recent intake matter.
Fasting plasma glucose — lab reference
Some search terms matchedNormal <100; prediabetes 100-125; diabetes ≥126 on confirmatory testing unless unequivocal hyperglycemia.
Fasting insulin — lab reference
Some search terms matchedNo universal reference or treatment target. Standardize fasting duration and collection time.
C-reactive protein (standard CRP) — lab reference
Some search terms matchedAssay-specific. Acute infection, injury, and chronic inflammation may elevate.
Bilirubin, total — lab reference
Some search terms matchedFasting, Gilbert syndrome, hemolysis, and liver disease may alter result.
Beta-hydroxybutyrate — lab reference
Some search terms matchedFasting, ketogenic diets, illness, and diabetes context materially affect interpretation.
Serum iron — lab reference
Some search terms matchedMorning fasting collection is preferred when practical. Day-to-day variation is substantial.
Transferrin saturation — lab reference
Some search terms matchedCalculated from iron and TIBC. Fasting and timing improve consistency.
Vitamin B1, whole blood TDP — lab reference
Some search terms matchedFasting and supplement abstention improve interpretability.
Vitamin A, retinol — lab reference
Some search terms matchedFasting, liver function, inflammation, and carrier proteins matter.
Zinc, serum — lab reference
Some search terms matchedFasting, time of day, inflammation, albumin, and trace-metal collection technique matter.
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