Research Article

Determination of Urinary Creatinine in Washington State Residents via Liquid Chromatography/Tandem Mass Spectrometry

Table 3

Comparison of between-day precision values for the Washington State Department of Health (PHL) method and three LC/MS/MS methods referenced in this paper.

Article referencedBetween-day precision (% RSD)

PHL method 1.34 to 2.59
Reference [13]2.0 to 4.4
Reference [14]<6
Reference [15]1.5 to 2.9