LabNorms Population Percentiles

Bicarbonate

Females, Age 30-39

The median serum bicarbonate for US females aged 30-39 in the US population is 25.0 mmol/L, with 90% of the population falling between 21.0 and 29.0 mmol/L.

NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 1,093 participants · Unit: mmol/L

Percentile Distribution

Percentile P5P25P50P75P95
Value (mmol/L) 21 23 25 26 29
21 23 25 26 29
P5 P25 P50 P75 P95

Data and Methodology

Dataset
NHANES 2017-March 2020 Pre-Pandemic ( NHANES 2017–2020 2020 , Survey-weighted percentiles from full MEC sample)
Survey years
2017-2020
Sample size
1,093 participants
Reference population
US civilian non-institutionalized females aged 30-39 from NHANES 2017-March 2020. Includes the full population (not restricted to healthy individuals) to reflect the population distribution.
Exclusion criteria
  • Missing bicarbonate measurement (LBXSC3SI)
  • Missing or zero MEC sample weight (WTMEC)
  • Age outside 30-39 range
Notes
Percentiles computed using survey-weighted analysis (WTMEC weight, divided by 2 to pool two cycles). Serum bicarbonate (total CO2) measured as LBXSC3SI in mmol/L.

Other Demographic Groups