Vacutest 13x75 tubes for coagulation and PTT tests are designed to ensure reliable and accurate results in coagulation tests. Each tube contains 0.20 ml of 3.8% sodium citrate (0.129 molar), ideal for plasma analysis. The package contains 100 pieces, perfect for laboratories and healthcare facilities that require a high volume of tests.

Product Features

• Dimensions: 13x75 mm


• Material: reinforced wall for greater strength and stability


• Sodium citrate volume: 0.20 ml for proper anticoagulation


• Package: 100 tubes to meet laboratory needs

Instructions for Use

To obtain optimal results, follow these recommendations:

Sample Mixing

• Gently invert the sample 4-5 times immediately after collection.

Centrifugation Times

• Minimum time before centrifugation: none


• Maximum time before centrifugation: 2 - 4 hours after collection, depending on the test to be performed.


• Centrifugation speed: 2000-2500 g for 15-20 minutes at 20-25 °C.

It is essential to use centrifugation times and speeds that ensure platelet-poor plasma.

Sample Storage

The plasma sample separated from the cellular component must be stored following the specific instructions for the test to be performed. Storage times and temperatures may vary depending on analytical requirements.

Additional Information

For further details and guidelines, it is recommended to consult CLSI (formerly NCCLS) H21-A5 or the specific instructions for the reagents used. Vacutest tubes are essential to ensure the quality of coagulation and PTT tests, contributing to more accurate and timely diagnoses.