Here are the various Lovenox doses in the FDA label:
Indication Dose and duration
VTE prevention after 30mg BID for 7-10 days,
hip/knee surgery then 40mg qD for 3 weeks
VTE prevention after
abdominal surgery 40mg Qd for 7-10 days
VTE prevention during
acute illness 40mg qD for 6-11 days
VTE treatment 1mg/kg BID or 1.5mg/kg BID for 5-7 days
ACS 1mg/kg BID for 2-8 days
STEMI 30mg IV bolus, then 1mg/kg for 2-8 days