LabNorms Population Percentiles

Creatine Kinase (CK)

Males, Non-Hispanic Asian

The median creatine kinase (CK) for Non-Hispanic Asian males aged 20 and older in the US is 145.7 U/L, with 90% of the population falling between 65 U/L and 501 U/L.

NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 428 participants · Unit: U/L

Percentile Distribution

Percentile P5P10P25P50P75P90P95
Value (U/L) 65 75 99 145.7 219 318.5 501
Percentile Value (U/L)
P5 65
P10 75
P25 99
P50 145.7
P75 219
P90 318.5
P95 501
65 99 145.7 219 501
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
428 participants
Reference population
US civilian non-institutionalized Non-Hispanic Asian males aged 20 and older from NHANES 2017-March 2020. Race and Hispanic origin is the NHANES RIDRETH3 recode of self-reported race and Hispanic origin. 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 under 20
  • Race/Hispanic origin other than Non-Hispanic Asian (RIDRETH3 = 6)
  • Participants coded RIDRETH3 = 7 (Other Race, including multiracial) are not published as a race/ethnicity slice; they remain in the age slices
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. Pooled across all adults aged 20 and older and not age-standardized, so differences between race/ethnicity slices partly reflect differences in age composition.

Other Demographic Groups

By age

By race and ethnicity