Total Thyroxine (T4)
Females, Age 20-29
The median total T4 for females aged 20-29 in the US population is 7.9 µg/dL, with 90% of this group falling between 6.2 and 11.6 µg/dL.
NHANES 2009-2012 Thyroid Profile (Subsample A) 2009-2012 · Sample size: 280 participants · Unit: µg/dL
Percentile Distribution
| Percentile | P5 | P10 | P25 | P50 | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|
| Value (µg/dL) | 6.2 | 6.5 | 7.1 | 7.9 | 8.9 | 10.1 | 11.6 |
| Percentile | Value (µg/dL) |
|---|---|
| P5 | 6.2 |
| P10 | 6.5 |
| P25 | 7.1 |
| P50 | 7.9 |
| P75 | 8.9 |
| P90 | 10.1 |
| P95 | 11.6 |
6.2 7.1 7.9 8.9 11.6
P5 P25 P50 P75 P95
Data and Methodology
- Dataset
- NHANES 2009-2012 Thyroid Profile (Subsample A) ( NHANES 2009-2012 Thyroid 2009 , Survey-weighted percentiles from NHANES 2009-2012 Thyroid Profile Subsample A)
- Survey years
- 2009-2012
- Sample size
- 280 participants
- Reference population
- US females aged 20-29, excluding pregnant participants, those with self-reported thyroid disease, and current thyroid medication users
- Exclusion criteria
-
- Age under 20
- Pregnant at time of exam (RIDEXPRG == 1)
- Self-reported thyroid disease (MCQ160M == 1)
- Current thyroid medication use (RXDDRUG match against thyroid_drug_list.txt)
- Missing analyte value
- Missing or zero subsample weight (WTSA2YR)
- Notes
- Percentiles computed using the Subsample A two-year weight (WTSA2YR), divided by 2 to pool the 2009-2010 and 2011-2012 cycles.