Normal Levels
Normal values indicated in the following tables pertain to humans. (Normals vary among species.)
| Reference ranges for blood plasma content of free cortisol | |||
|---|---|---|---|
| Time | Lower limit | Upper limit | Unit |
| 09:00 am | 140 | 700 | nmol/L |
| 5 | 25 | μg/dL | |
| Midnight | 80 | 350 | nmol/L |
| 2.9 | 13 | μg/dL | |
Using the molecular weight of 362.460 g/mole, the conversion factor from µg/dl to nmol/L is approximately 27.6; thus, 10 µg/dl is approximately equal to 276 nmol/L.
| Reference ranges for urinalysis of free cortisol | |||
|---|---|---|---|
| Lower limit | Upper limit | Unit | |
| 28 or 30 | 280 or 490 | nmol/24h | |
| 10 or 11 | 100 or 176 | µg/24 h | |
Read more about this topic: Cortisol
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