Table 2.
References values of soluble α-Klotho serum levels using an enzyme-linked immunosorbent assay in healthy adults aged 18–85 years.
| α-Klotho (pg/mL) | ||||
|---|---|---|---|---|
| Mean | SD | Reference Interval (5th–95th Percentile) |
||
| All (n = 346) | 813.8 | 461.2 | 340.1 | 1672.5 |
| Men (n = 143) | 728.3 | 412.0 | 323.4 | 1541.8 |
| Women (n = 203) | 874.0 | 485.0 | 385.4 | 1750.8 |
| 18–34.9 years (n = 167) | 932.6 | 575.6 | 392.6 | 2291.8 |
| Men (n = 57) | 850.9 | 566.4 | 341.2 | 2282.8 |
| Women (n = 110) | 975.9 | 578.3 | 427.2 | 2345.5 |
| 35–54.9 years (n = 88) | 796.7 | 317.4 | 330.2 | 1364.6 |
| Men (n = 41) | 733.9 | 249.6 | 324.6 | 1228.3 |
| Women (n = 47) | 851.5 | 360.2 | 312.6 | 1420.0 |
| 55–85 years (n = 91) | 612.1 | 198.2 | 235.8 | 918.6 |
| Men (n = 45) | 567.9 | 192.5 | 190.4 | 851.5 |
| Women (n = 46) | 655.5 | 196.2 | 260.4 | 934.4 |
Data are expressed as means, standard deviations (SD), and reference values (5th–95th percentile).