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Hormones

Prolactin: convert mIU/L to ng/mL

ng/mL = mIU/L × 0.04717

Calculator

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

Conversion formulas

mIU/L → ng/mLng/mL = mIU/L × 0.04717
ng/mL → mIU/LmIU/L = ng/mL × 21.2

Conversion table

Highlighted: values inside the adult reference range.

mIU/Lng/mL
1004.717
2009.434
30014.15
40018.87
50023.58
60028.3
70033.02
80037.74
90042.45
100047.17
110051.89
120056.6
130061.32

Reference range

0 – 530 mIU/L = 0 – 25 ng/mL

Source: MedlinePlus (NLM): Prolactin blood test · Last reviewed: 2026-10-14

Frequently asked questions

How do I convert Prolactin from mIU/L to ng/mL?

ng/mL = mIU/L × 0.04717. For example, 300 mIU/L equals 14.2 ng/mL.

How many ng/mL are 300 mIU/L?

300 mIU/L equal 14.2 ng/mL (Prolactin).

How do I convert Prolactin from ng/mL back to mIU/L?

mIU/L = ng/mL × 21.2.

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