| abstract |
The present invention relates to a compound of formula (I), formula (II), formula (III), formula (IV) or a salt thereof, compositions and methods for producing the compound, methods and reagents for measuring the compound, and kits employing them. The present invention relates to a compound of formula (I), of formula (II), formula (III) or formula (IV) for the evaluation or monitoring of renal function in a subject, the determination of the predisposition to to develop reduced renal function, classification of a subject according to the level of renal function, and diagnosis or monitoring of chronic kidney disease. |