White Blood Cell Count (WBC)
Females, Age 40-49
The median WBC for females aged 40-49 in the US population is 7.2 (x1000 cells/µL), with 90% of the population falling between 4.0 and 12.1.
NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 659 participants · Unit: 1000 cells/µL
Percentile Distribution
| Percentile | P5 | P10 | P25 | P50 | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|
| Value (1000 cells/µL) | 4 | 4.8 | 5.8 | 7.2 | 8.7 | 10.8 | 12.1 |
| Percentile | Value (1000 cells/µL) |
|---|---|
| P5 | 4 |
| P10 | 4.8 |
| P25 | 5.8 |
| P50 | 7.2 |
| P75 | 8.7 |
| P90 | 10.8 |
| P95 | 12.1 |
4 5.8 7.2 8.7 12.1
P5 P25 P50 P75 P95
Data and Methodology
- Dataset
- NHANES 2017-March 2020 Pre-Pandemic ( NHANES 2017-2020 2020 , Survey-weighted percentiles from pre-pandemic MEC sample)
- Survey years
- 2017-2020
- Sample size
- 659 participants
- Reference population
- US civilian non-institutionalized females aged 40-49 from NHANES 2017-March 2020. Includes the full population (not restricted to healthy individuals) to reflect the population distribution.
- Exclusion criteria
-
- Missing WBC measurement (LBXWBCSI)
- Missing or zero MEC sample weight (WTMECPRP)
- Age outside 40-49 range
- Notes
- Percentiles computed using survey-weighted analysis (WTMECPRP weight from the pre-pandemic combined file). WBC measured as LBXWBCSI in 1000 cells/µL.