Product Overview
The Gray Cap Vacuum Blood Collection Tube (Sodium Fluoride/Potassium Oxalate Tube) is designed for accurate glucose testing. Pre-filled with Sodium Fluoride (NaF) and Potassium Oxalate (K₂C₂O₄), it inhibits glycolysis and prevents clotting. Ideal for preserving blood glucose stability for up to 24 hours at room temperature.
Key Features
Glucose Preservation:
NaF inhibits glycolytic enzymes, maintaining glucose stability for 24 hours (vs. 2 hours in standard tubes);
Precisely controlled additive ratio (blood volume error ≤±5%).
Rapid Anticoagulation & Safety:
Potassium oxalate chelates calcium ions within 5 seconds;
Silicone-coated interior minimizes hemolysis (rate <0.1%).
Standardized Design:
Gray cap (ISO 6710 coding) ensures global recognition;
Phthalate-free butyl stopper prevents sample contamination.
Primary Applications
Blood Glucose Testing:
Fasting blood glucose (FBG), postprandial glucose (PPG), oral glucose tolerance test (OGTT);
Delayed Testing Scenarios:
Ambulances, community clinics requiring extended sample stability;
Specialized Analysis:
Blood alcohol concentration testing (NaF inhibits ethanol metabolism enzymes).