Hormones

IGFBP-3 unit converter

Main carrier protein for IGF-1 (growth hormone axis marker)

Also known as: Insulin-like growth factor binding protein 3

Converter

Enter a value in any unit and all other units fill in.

mg/L ng/mL = µg/L mg/dL µg/dL

Worked example

5.45 mg/L (middle of the reference range) = 5 450 ng/mL

Conversion formulas

ng/mL = µg/L	ng/mL = mg/L × 1000	mg/L = ng/mL × 0.001
mg/dL	mg/dL = mg/L × 0.1	mg/L = mg/dL × 10
µg/dL	µg/dL = mg/L × 100	mg/L = µg/dL × 0.01

Reference range

Unit	Adults
mg/L	3.3 – 7.6
ng/mL = µg/L	3300 – 7600
mg/dL	0.33 – 0.76
µg/dL	330 – 760

Source: ARUP Laboratories, Insulin-Like Growth Factor Binding Protein III (IGFBP-3) · Last reviewed: 2026-10-14

Note from the source: Strongly age-dependent. ARUP table (ng/mL): 26-30 y 3500-7600, 31-35 y 3500-7000, 36-40 y 3400-6700, 41-45 y 3300-6600, 46-50 y 3300-6700; children and adults over 50 differ. Range shown is the envelope for ages 26-50

Frequently asked questions

How do I convert IGFBP-3 from mg/L to mg/dL?

mg/dL = mg/L × 0.1. In the other direction: mg/L = mg/dL × 10.

What is the reference range of IGFBP-3?

For adults the range is 3.3 – 7.6 mg/L (ARUP Laboratories, Insulin-Like Growth Factor Binding Protein III (IGFBP-3)). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for IGFBP-3?

Common units are mg/L, ng/mL, mg/dL, µg/dL.