PT Tube & Foundation For International Normalized Ratio Optimal For Automated Analyzers
Prothrombin Time Blood Collection Tube
Product Positioning
Specialized vacuum tube for coagulation testing (light blue stopper), serving as the gold-standard tool for thrombotic and hemostatic screening.
Core Mechanism
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3.2% Sodium Citrate
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Precise chelation of calcium ions (Ca²⁺), inhibiting coagulation cascade
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*Critical ratio control: Anticoagulant:Blood=1:9*
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*＞10% deviation causes falsely prolonged PT/APTT*
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Key Features
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*Silicone-coated interior minimizes platelet activation (ISO 6710 compliant)*
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*Vacuum accuracy ≤3% deviation (CLSI H21-A5 certified)*
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Pre-filled lyophilized anticoagulant for instant mixing
Core Applications
| Test Panel | Clinical Significance |
|---|---|
| PT (Prothrombin Time) | Warfarin monitoring/Liver function |
| APTT (Activated Partial Thromboplastin Time) | Heparin therapy/Intrinsic pathway |
| Coagulation Factor Assays | Hemophilia diagnosis |
Critical Warnings
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Underfilling (90% volume): PT prolongation ≥20% (may cause false heparin resistance)
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*Gently invert 5-8 times immediately (vigorous shaking activates platelets)*
Technical Advantages
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Foundation for International Normalized Ratio (INR)
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Enables cross-lab PT comparability (WHO-certified system)
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Optimal for automated analyzers
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*Fibrin-free plasma after high-speed centrifugation (15000×g, 5min)*
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.