Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Age-specific reference levels for 24-h UFC in children, analyzed by LC-MS/MS
| Age, y | 24-h urine free cortisol, mcg/24 h | 24-h urine free cortisol, nmol/24 h |
|---|---|---|
| 3-8 | <20 | <55 |
| 9-12 | <37 | <102 |
| 13-17 | <56 | <155 |
Abbreviations: LC-MS/MS, liquid chromatography tandem mass spectometry; UFC, urine free cortisol
