Fasting Specimen Requirements
Recommendations for fasting instructions prior to collection of a fasting glucose or lipid profile:
Patient may have water. Black coffee with an artificial sweetener is approved but no sugar, milk or cream. Unsweetened tea is approved. Lipid testing requires a 12 hour fast; other fasting tests require an 8 hour fast.

Fasting Specimens:
7-Dehydrocholesterol (Smith-Lemli-Opitz Screen), Plasma Commercial Mailouts
Amino Acids, Quantitative, Plasma or Serum Commercial Mailouts
Amylase, Macro, Serum Commercial Mailouts
Apolipoprotein B/A Ratio, Serum Commercial Mailouts
Bile Acids, Total, Serum Commercial Mailouts
C-Telopeptide (CTx), Serum Commercial Mailouts
Cholesterol, Low-Density Lipoprotein (calculated), Plasma Chemistry
Coenzyme Q10, Total, Serum or Plasma Commercial Mailouts
D-Xylose Absorption Test (Adults and Pediatrics), Urine Commercial Mailouts
Folate, Serum Chemistry
Gal-1-Phos Urdyltrns Phenoytpe, RBC, Whole Blood Commercial Mailouts
Galactosemia Confirmation Test, Blood Commercial Mailouts
Gastrin, Serum Commercial Mailouts
Gastrin Releasing Peptide (GRP) Commercial Mailouts
Glucagon, Plasma Commercial Mailouts
Glucose, Plasma or Whole Blood Chemistry
Glucose Tolerance Test-3 HR, Plasma Chemistry
Helicobacter pylori Breath Test Commercial Mailouts
Insulin Antibodies, Serum Commercial Mailouts
Insulin Assay, Plasma Chemistry
Leptin, Serum Commercial Mailouts
Lipoprotein Metabolism Profile, Serum Commercial Mailouts
Low Density Cholesterol Measured, Plasma Chemistry
Pancreatic Polypeptide, Serum Commercial Mailouts
Pepsinogen II, Plasma or Serum Commercial Mailouts
Pipecolic Acid, Serum Commercial Mailouts
Porphyrins Fractionated, Erythrocytes (RBC) Commercial Mailouts
Proinsulin, Plasma Commercial Mailouts
Substance P, Serum or Plasma Commercial Mailouts
Triglycerides, Plasma Chemistry
Very Long Chain Fatty Acids, Whole Blood Commercial Mailouts
Vitamin A, Serum or Plasma Commercial Mailouts
Vitamin E, Serum Commercial Mailouts

View article - Blood Sampling: Is Fasting Properly Defined?
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