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 Mechanism3.2% Sodium Citrate
Precise chelation of calcium ions (Ca²⁺), inhibiting coagulation cascade
*Critical ratio control: Anticoagulant:Blood=1:9*
*＞10% deviation causes falsely prolonged PT/APTT*
Key Features*Silicone-coated interior minimizes platelet activation (ISO 6710 compliant)*
*Vacuum accuracy ≤3% deviation (CLSI H21-A5 certified)*
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⚠️
Underfilling (90% volume): PT prolongation ≥20% (may cause false heparin resistance)
⚠️
*Gently invert 5-8 times immediately (vigorous shaking activates platelets)*
Technical Advantages 
Foundation for International Normalized Ratio (INR)
Enables cross-lab PT comparability (WHO-certified system)
 
Optimal for automated analyzers
*Fibrin-free plasma after high-speed centrifugation (15000×g, 5min)*

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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

PT Tube & Foundation For International Normalized Ratio Optimal For Automated Analyzers

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PT Tube & Foundation For International Normalized Ratio Optimal For Automated Analyzers

Product Positioning Specialized vacuum tube for coagulation testing (light blue stopper), serving as the gold-standard tool for thrombotic and hemostatic screening.

Core Mechanism

Key Features

Core Applications

Critical Warnings

Technical Advantages

Product Positioning
Specialized vacuum tube for coagulation testing (light blue stopper), serving as the gold-standard tool for thrombotic and hemostatic screening.