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Anti-factor IIa and anti-factor Xa activities provided by the manufacturer.
| Heparin # | Anti-factor IIa activity (IU/mg)a |
Anti-factor Xa activity (U/mg) |
Anti-Xa/Anti-IIa ratiob |
|---|---|---|---|
| 1 | 197 | 197 | 1.0 |
| 2 | 203 | -- | -- |
| 3 | 201 | 197 | 0.98 |
| 5 | 203 | -- | -- |
| 6 | 204 | -- | -- |
| 7 | 210 | -- | -- |
| 8 | 200 | -- | -- |
USP heparin is required to have an anti-factor IIa activity of >180 IU/mg.
USP heparin is required to have an anti-factor Xa/anti-factor IIa activity ratio of 0.9 to 1.1.
