What are the normal values for SCR and CR?

SCR usually refers to serum creatinine, while CR typically means urine creatinine. Under normal circumstances, the reference ranges for serum and urine creatinine are generally differentiated by adult males and females, with some variation in values. The specific details are as follows:

Serum creatinine and urine creatinine are routine indicators used to assess kidney function, reflecting levels of creatinine—a metabolic byproduct of muscle activity—and are commonly used to evaluate the kidney's filtration capacity. The normal range for serum creatinine is generally 53–106 μmol/L in adult males and 44–97 μmol/L in adult females. For urine creatinine, the normal range is typically 124–230 μmol/(kg·d) in adult males and 97–177 μmol/(kg·d) in adult females. It should be noted that normal ranges for both serum and urine creatinine may vary depending on factors such as age, gender, muscle mass, and changes in kidney function.

If test results show abnormally high or low values, prompt medical evaluation is recommended to avoid delaying optimal treatment and potentially life-threatening complications.