Femoral vein phlebotomy is a commonly used technique to obtain venous blood in situations where peripheral venous access is not possible. It is often performed by junior medical staff members and there is little formal teaching of the technique. There are no good research articles on safe postprocedural management or of complication rates. Furthermore, few medical textbooks deal with the procedure beyond demonstration of the femoral neurovascular anatomy. Information available recommends compression times of between 3-15 min following femoral arterial blood sampling in patients with normal coagulation parameters. 1 2 There are no guidelines available in the literature for compression times following femoral venous puncture. The authors report a case of life threatening occult haemorrhage following apparently unsuccessful femoral venepuncture. This case demonstrates the importance of post procedural care in all cases of invasive central venous access.