LabNorms Population Percentiles

Total Triiodothyronine (T3)

Females, Age 40-49

The median total T3 for females aged 40-49 in the US population is 109.0 ng/dL, with 90% of this group falling between 81.0 and 163.9 ng/dL.

NHANES 2009-2012 Thyroid Profile (Subsample A) 2009-2012 · Sample size: 282 participants · Unit: ng/dL

Percentile Distribution

Percentile P5P10P25P50P75P90P95
Value (ng/dL) 81 85.5 94 109 124 141 163.9
Percentile Value (ng/dL)
P5 81
P10 85.5
P25 94
P50 109
P75 124
P90 141
P95 163.9
81 94 109 124 163.9
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
282 participants
Reference population
US females aged 40-49, 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.

Other Demographic Groups