Vitamin B12
Females, Age 40-49
The median vitamin B12 for females aged 40-49 in the US population is 487 pg/mL, with 90% of this group falling between 234 and 1269 pg/mL.
NHANES 2013-2014 2013-2014 · Sample size: 517 participants · Unit: pg/mL
Percentile Distribution
Unit:
| Percentile | P5 | P25 | P50 | P75 | P95 |
|---|---|---|---|---|---|
| Value (pg/mL) | 234 | 375 | 487 | 671 | 1269 |
234 375 487 671 1269
P5 P25 P50 P75 P95
Data and Methodology
- Dataset
- NHANES 2013-2014 ( NHANES 2013-2014 2013 , Survey-weighted percentiles from NHANES 2013-2014 single cycle. Sample weight WTMEC2YR is applied directly with no division because data are not pooled across cycles.)
- Survey years
- 2013-2014
- Sample size
- 517 participants
- Reference population
- US adults aged 20+, excluding pregnant participants
- Exclusion criteria
-
- Age under 20
- Pregnant at time of exam (RIDEXPRG == 1)
- Missing analyte value
- Missing or zero MEC two-year sample weight (WTMEC2YR)