Creatine Kinase (CK)
Females, Age 20-29
The median creatine kinase (CK) for US females aged 20-29 is 87 U/L, with 90% of the population falling between 44 U/L and 268 U/L.
NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 611 participants · Unit: U/L
Percentile Distribution
| Percentile | P5 | P25 | P50 | P75 | P95 |
|---|---|---|---|---|---|
| Value (U/L) | 44 | 65 | 87 | 126 | 268 |
44 65 87 126 268
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 creatine kinase value (LBXSCK)
- 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). Creatine kinase measured as LBXSCK; the NHANES codebook labels the unit IU/L, which is the same unit as U/L.