Heparin Assay
7 days
The heparin anti-Xa assay is based the ability of heparin toinhibit the activity of activated factor X (Xa) in the reagent. The reagent includes excess antithrombin, making the heparin in the sample the rate-limiting reagent for Xa inhibition. Heparin in the patient sample inhibits the enzymatic conversion of a Xa-specific chromogenic substrate to colored product by factor Xa. Standard curves are createdusing multiple concentrations of UFH and LMWH and are used to calculate concentration in the patient plasma.
Accredited Laboratory Partner
Contact Technical Support
Monitors heparin therapy by measuring anti-Xa activity. Used in both LMWH and UFH therapy.
Plasma, Frozen
1 mL
Blue top (sodium citrate) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Frozen | Contact Technical Support |
Heparin Assay
7 days
The heparin anti-Xa assay is based the ability of heparin toinhibit the activity of activated factor X (Xa) in the reagent. The reagent includes excess antithrombin, making the heparin in the sample the rate-limiting reagent for Xa inhibition. Heparin in the patient sample inhibits the enzymatic conversion of a Xa-specific chromogenic substrate to colored product by factor Xa. Standard curves are createdusing multiple concentrations of UFH and LMWH and are used to calculate concentration in the patient plasma.
Accredited Laboratory Partner
Contact Technical Support
Monitors heparin therapy by measuring anti-Xa activity. Used in both LMWH and UFH therapy.
Plasma, Frozen
1 mL
Blue top (sodium citrate) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Frozen | Contact Technical Support |