• Indications
  1. Venous Thromboembolism (DVT, PE) prophylaxis and treatment
  2. Acute Coronary Syndrome
  1. Creatinine Clearance (CrCl) >30 ml/min
    1. Normal Dosing (BMI 18.5 to 40 kg/m2 or weight <100 kg)
      1. Enoxaparin (Lovenox) 40 mg SQ daily for medical inpatients or abdominal surgery
      2. Enoxaparin (Lovenox) 30 mg SQ every 12 hours if s/p knee or hip replacement
    2. Morbid Obesity (BMI >40 kg/m2 or weight >100 kg)
      1. BMI 40 to 49 kg/m2: Enoxaparin 40 mg SQ twice daily
      2. BMI >=50 kg/m2: Enoxaparin 60 mg SQ twice daily
    3. Low Body Weight (BMI <18.5 kg/m2 or weight <50 kg)
      1. Enoxaparin 30-40 mg SQ once daily
  2. Creatinine Clearance (CrCl) 15-30 ml/min (or weight <40 kg)
    1. Enoxaparin (Lovenox) 30 mg SQ daily
  3. Creatinine Clearance (CrCl) <15 ml/min
    1. Enoxaparin (Lovenox) is contraindicated
    2. Use Unfractionated Heparin 5000 units SQ every 8-12 hours
  • Dosing
  • Therapeutic Dose
  1. Creatinine Clearance (CrCl) >30 ml/min
    1. Normal Dosing (BMI <40 kg/m2 or weight <100 kg)
      1. Enoxaparin (Lovenox) 1 mg/kg SQ every 12 hours OR
      2. Enoxaparin 1.5 mg/kg SQ every 24 hours for inpatients with acute VTE (DVT, PE)
    2. Morbid Obesity (BMI >40 kg/m2 or weight >100 kg)
      1. Enoxaparin (Lovenox) 0.75 to 0.85 mg/kg SQ every 12 hours
  2. Creatinine Clearance (CrCl) 15-30 ml/min (or weight <40 kg)
    1. Unfractionated Heparin is preferred
    2. As an alternative, Enoxaparin (Lovenox) 1 mg/kg SQ once daily for up to 7 days
  3. Creatinine Clearance (CrCl) <15 ml/min
    1. Enoxaparin (Lovenox) is contraindicated
    2. Use Unfractionated Heparin 5000 units SQ every 8-12 hours
  • Safety
  1. Use in pregnancy when benefit outweighs the risk
  2. Considered safe in Lactation
  3. Factor Xa levels are not accurate for monitoring LMWH SQ Injection thereapeutic range
  • References
  1. Dummer (2009) Perioperative Guidelines
  2. Douketis (2008) Chest 133(6 Suppl):299S-339S [PubMed]
  3. (2025) Presc Lett 32(2): 11