The US National Institute of Standards and Technology (NIST) has developed the first human urine standard with precise measurements of albumin, a biomarker used in combination with creatinine to assess kidney health.? Standards exist to support measurements of creatinine. However, until now, there were no standards for albumin in human urine; instead, that standard was based in serum.? "The ideal standard is always in the same material as the clinical sample," said bioanalytical chemi...