Specimen requirements, transport, stability and collection directions for Urea Nitrogen (BUN) at LabX Diagnostic Systems, LLC. Log in for cash pricing.
🧪 Preferred specimen1 mL serum
🧫 TubeSST
📦 Transport / shippingSpun serum separator tube (SST) · Room temperature
⏱ StabilitySerum and plasma · Room temperature: 7 days · Refrigerated: 5 days · Frozen: 28 days
Collection directions: Alternative specimen: Sodium heparin (green-top) tube • Lithium heparin (green-top) tube. Minimum volume: 0.5 mL. Reject criteria: Anticoagulants other than heparin
