Specimen requirements, transport, stability and collection directions for GLUCOSE FASTING at LabX Diagnostic Systems, LLC. Log in for cash pricing.
🧪 Preferred specimenTwo - 1 mL plasma specimens collected in fluoride/oxalate (gray-top) tubes · Instructions: First specimen obtained fasting. Second specimen obtained 2 hours following a meal. Label each specimen with the specific draw time. Serum and plasma submissions must be separated from cells.
📦 Transport / shippingFluoride/oxalate (gray-top) tubes · Room temperature
⏱ StabilitySerum · Room temperature: 4 days · Refrigerated: 7 days · Frozen: 28 days · Whole blood (gray-top) tube · Room temperature: 24 hours · Refrigerated: 72 hours · Frozen: Unacceptable · Sodium fluoride plasma · Room temperature: 7 days · Refrigerated: 7 days · Frozen: 28 days · Heparinized plasma · Room temperature: 48 hours · Refrigerated: 7 days · Frozen: 28 days
Collection directions: Alternative specimen: Plasma from fluoride/oxalate (gray-top) tube in a plastic screw-cap vial • Serum (separated from cells immediately) in a plastic screw-cap vial • Spun SST • Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial • Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial. Minimum volume: 0.5 mL each specimen. Reject criteria: Unspun serum or plasma separator tube (SST or PST) • Red-top or green-top tube (serum or heparinized plasma not separated from cells) • Anticoagulants other than lithium heparin, sodium heparin or fluoride/oxalate
