A serum cobalt level of > 7 mg/L indicates possible periprosthetic metallosis. A normal serum cobalt level is .19 mg/L and 95% of those who are unexposed to cobalt have a value of <.41 mg/L. A serum cobalt level of > 1 mg/L indicates excessive cobalt exposure, and levels of >5 mg/L are considered toxic.
DePuy Orthopedics, Inc. has released a report stating that concentrations greater than 7 parts per billion of cobalt and/or chromium are of concern. If either is the case, you should get another blood test within three months of the first one. If the second blood test shows a concentration of cobalt and chromium still above 7 parts per billion, your doctor will likely recommend a MARS MRI and/or ultrasound and more testing. Even with no physical symptoms, your body could still be facing health issues for years to come associated with the recalled ASR hip implant. For more information about the ASR Hip Recall and the symptoms associated with the hip’s failure rate, contact us by using the form on this page.