Biological factors influencing plasma PS levels
Biological factor . | Parameter . | Reference no. . |
|---|---|---|
| Gender | Men have higher FPS and TPS than women | 136-138 |
| Age | Neonates have low TPS but high FPS (and PS activity) due to decreased levels of C4BP; elderly people have higher TPS levels | 137, 139, 140 |
| Hormonal state | PS levels are lower during pregnancy (particularly during weeks 18-28 of pregnancy) and in women taking oral contraceptives (in particular, desogestrel-containing preparations) | 136, 141-143 |
| Shared environment | This is predicted to have a strong effect on FPS levels | 144 |
Biological factor . | Parameter . | Reference no. . |
|---|---|---|
| Gender | Men have higher FPS and TPS than women | 136-138 |
| Age | Neonates have low TPS but high FPS (and PS activity) due to decreased levels of C4BP; elderly people have higher TPS levels | 137, 139, 140 |
| Hormonal state | PS levels are lower during pregnancy (particularly during weeks 18-28 of pregnancy) and in women taking oral contraceptives (in particular, desogestrel-containing preparations) | 136, 141-143 |
| Shared environment | This is predicted to have a strong effect on FPS levels | 144 |