Creatine Kinase (CK)
Females, Age 50-59
The median creatine kinase (CK) for US females aged 50-59 is 89 U/L, with 90% of the population falling between 40 U/L and 251 U/L.
NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 733 participants · Unit: U/L
Percentile Distribution
| Percentile | P5 | P25 | P50 | P75 | P95 |
|---|---|---|---|---|---|
| Value (U/L) | 40 | 63 | 89 | 129 | 251 |
40 63 89 129 251
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
- 733 participants
- Reference population
- US civilian non-institutionalized females aged 50-59 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 50-59 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.