| Mean (SE), ng/mL | Range, ng/mL | |
| Radioimmunoassay of unextracted saliva | ||
| Men (7 AM) | 5.0 ± 0.4 | |
| Women (7 AM) | 5.8 ± 0.5 | |
| Men and women (11 PM) | 0.4 ± 0.1 | |
| Radioimmunoassay of unextracted saliva | ||
| Men and women (9 AM) | 6.0 ± 0.4 | 1.9-10.4 |
| Men and women (11 PM) | 1.0 ± 0.1 | 0.6-2.3 |
| Obese men and women (9 AM) | 5.3 ± 1.0 | 0.9-16.0 |
| Obese men and women (11 PM) | 1.3 ± 0.2 | 0.6-3.9 |
