Recommended total and weekly gain by pre-pregnancy BMI (IOM 2009 + ACOG 2013).
These ranges are population guidance — individual targets are set with your antenatal care team. This tool does not replace clinical care.
Your current gain sits within the mid-range trajectory of the IOM 2009 guidance for your pre-pregnancy BMI and this gestational week.
Population guidance from IOM 2009 and ACOG 2013. Individual targets are set by your antenatal care team.
| Category | Range |
|---|---|
| Underweight (BMI < 18.5) | Total 12.5 – 18 kg (28 – 40 lb) |
| Normal weight (18.5 – 24.9) | Total 11.5 – 16 kg (25 – 35 lb) |
| Overweight (25 – 29.9) | Total 7 – 11.5 kg (15 – 25 lb) |
| Obese (BMI ≥ 30) | Total 5 – 9 kg (11 – 20 lb) |
Kidney Function & ElectrolytesUnderstand what creatinine and estimated GFR (eGFR) measure, why eGFR is a calculated estimate rather than a direct measurement, and why one result cannot diagnose chronic kidney disease on its own.
Kidney Function & ElectrolytesLearn what blood urea nitrogen (BUN) measures, why it can rise for reasons unrelated to kidney filtration, and why the BUN-to-creatinine ratio adds context a single BUN value can't.
Kidney Function & ElectrolytesLearn why urine albumin-to-creatinine ratio (uACR) can detect kidney damage before eGFR falls, how the A1/A2/A3 categories work, and what can cause a falsely elevated result.
Kidney Function & ElectrolytesLearn what cystatin C measures, why it's less affected by muscle mass than creatinine, and when guidelines recommend using it to confirm a borderline eGFR result.
Your current gain sits within the mid-range trajectory of the IOM 2009 guidance for your pre-pregnancy BMI and this gestational week.
Continue routine antenatal visits.