Vacuum Blood Tube
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Vacuum Blood Tube

Vacuum blood tube is a sterile, single-use glass or plastic vial closed by a rubber stopper and held under negative pressure. When a needle pierces the stopper, the vacuum automatically aspirates a predetermined volume of blood from the patient’s vein into the tube. The interior may contain additives—anticoagulants, clot activators, or gel separators—tailored to specific laboratory tests. Color-coded caps indicate the additive type and intended clinical use, ensuring correct sample handling and accurate diagnostic results.

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Description

Technical Parameters

Description:

Vacuum blood tube is a sterile, single-use glass or plastic vial closed by a rubber stopper and held under negative pressure. When a needle pierces the stopper, the vacuum automatically aspirates a predetermined volume of blood from the patient's vein into the tube. The interior may contain additives-anticoagulants, clot activators, or gel separators-tailored to specific laboratory tests. Color-coded caps indicate the additive type and intended clinical use, ensuring correct sample handling and accurate diagnostic results.

Material	Medical-grade PET (Polyethylene Terephthalate) or glass; lightweight, shatter-resistant (PET preferred for safety).
Capacity	1–10 mL (common sizes 2 mL, 3 mL, 5 mL, 10 mL) based on testing needs.
Vacuum	Pre-evacuated to a precise negative pressure, ensuring accurate blood draw volume (±5% tolerance).
Additives	May contain specific reagents (e.g., EDTA for hematology, heparin for chemistry, clot activators for serum) based on test type; additive volume and distribution optimized for sample stability.
Closure	Rubber stopper (butyl rubber) with color-coded cap (standardized globally, e.g., lavender for EDTA, green for heparin) to indicate additive type.
Sterility	Inner surface and stopper sterilized; non-pyrogenic and endotoxin-free.
Packaging	Individually wrapped or bulk-packed in sealed trays; shelf life 18–36 months (varies by manufacturer).
Compatibility	Works with standard blood collection needles (21G–25G) and holders.