Table 1 Comparison between heparin and low molecular weight heparin (LMWH) size and anticoagulant activity
From: Arterial indications for the low molecular weight heparins
| Â | Heparin | LMWH |
|---|---|---|
Mean molecular weight | 12,000–15,000 | 4000–6500 |
Saccharide units (mean) | 40–50 | 13–22 |
Anti-Xa : anti-IIa activity | 1:1 | 2:1–4:1 |