Calibrators and Controls

VitaCal INR plasmas are lyophilised plasmas intended to assist laboratories carrying out Prothrombin Time (PT) tests for monitoring oral anticoagulant therapy. VitaCal can be used to check the laboratories International Sensitivity Index (ISI) and Mean Normal Prothrombin Time (MNPT) values for reagent / instrument combinations and also allow the direct conversion of Prothrombin Time (PT) results to International Normalised Ratios (INRs).

VitaCal is provided in a lyophilised format and calibrated against International Reference Preparations from National Institute of Biological Standards in London.

Consensus Studies

Each batch of VitaCal is supplied to a range of customers for testing. These results are tabulated and a consensus ISI and MNPT is established. The results are made available to laboratories for them to calculate their ISI or we offer a personalised service of ISI calculation.

VitaPlas coagulation controls are unassayed lyophilised plasmas that laboratories can use to monitor performance of their Prothrombin Time (PT), Activated Partial Prothrombin Time (APTT), and some other tests of haemostatic function.

VitaPlas coagulation controls are coloured lyophilised material with matching coloured caps for easy visual recognition.

Each batch of VitaPlas has good open vial stability and minimum 12 month expiry date.

• VP1 provides a control with normal PT, APTT and Fibrinogen levels
• VP2 is a control that contains slightly abnormal PT and APTT levels with a low fibrinogen
• VP3 is a more “abnormal control” for PT and APTT with a high fibrinogen level.