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These 100 sterile, single-use Lab-Vac vacuum blood collection tubes are ideal for hemostasis testing. Each tube features a 13x75mm PET (polyethylene terephthalate) body with a blue, two-component plastic closure and a gray, bromobutyl rubber stopper for multiple punctures. Containing 3.8% (0.129M) sodium citrate as an anticoagulant, these tubes provide a 9:1 blood-to-reagent ratio for accurate results. The tubes hold 4.5ml of blood and feature a clearly labeled, tamper-evident sticker indicating the contents, volume, fill line, sterility, sterilization method, lot number, and expiry date – all in Russian. Space is provided for patient data and test date. The color-coded labels (matching the cap) allow for easy identification, even with the cap removed, ensuring seamless integration with automated analyzers.