Figure. (IMAGE) Osaka University Caption D-Serine is useful for the measurement of glomerular filtration rate (GFR). The clearance of D-serine has an advantage of lower bias against GFR compared to that with the creatinine clearance. Combinational clearance measurement of D-serine and creatinine can serve as a measure of GFR with precision and low bias. Credit Tomonori Kimura Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.