A 40 year‐old woman with obstructive jaundice due to carcinoma of the head of the pancreas is presented. Chemical determinations on the patient's jaundiced serum, using an organic dye‐binding method showed a low albumin determination which led to infusion of six units of salt poor albumin. Subsequent studies of albumin by electrophoresis using the pretransfusion specimen showed a normal quantity of albumin. Caution is urged in the transfusion of albumin to jaundiced patients, since the dye‐binding technique is in common use in the automated chemistry