Comparison of an electrochemical biosensor with optical devices for hemoglobin measurement in human whole blood samples

►An electrochemical based hemoglobin test system has been developed. ►Whole blood samples, fresh, 7 days old or hemolyzed, can be measured accurately. ►Bilirubin concentration up to 150 mg/l did not show any interference. ►Comparison to optical method instruments, 95% of tests were within a ± 15% of bias.