Calculated Serum Osmolality
Females, Age 20-29
The median calculated serum osmolality for US females aged 20-29 is 278 mmol/kg, with 90% of the population falling between 271 and 286 mmol/kg.
NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 611 participants · Unit: mmol/kg
Percentile Distribution
| Percentile | P5 | P25 | P50 | P75 | P95 |
|---|---|---|---|---|---|
| Value (mmol/kg) | 271 | 275 | 278 | 281 | 286 |
271 275 278 281 286
P5 P25 P50 P75 P95
Data and Methodology
- Dataset
- NHANES 2017-March 2020 Pre-Pandemic ( NHANES 2017–2020 2020 , Survey-weighted percentiles from the full MEC sample)
- Survey years
- 2017-2020
- Sample size
- 611 participants
- Reference population
- US civilian non-institutionalized females aged 20-29 from NHANES 2017-March 2020. Includes the full population (not restricted to healthy individuals) to reflect the population distribution.
- Exclusion criteria
-
- Missing calculated serum osmolality value (LBXSOSSI)
- Missing or zero combined pre-pandemic MEC sample weight (WTMECPRP)
- Age outside 20-29 range
- Notes
- Percentiles computed using the combined pre-pandemic MEC weight (WTMECPRP). Calculated serum osmolality reported as LBXSOSSI in mmol/kg using the NHANES formula (1.86 x sodium) + (glucose / 18) + (BUN / 2.8) + 9; it was not measured with an osmometer.