Urine & CSF

Delta-ALA (24-h urine) unit converter

Delta-aminolevulinic acid excreted in 24-hour urine (porphyrin pathway)

Also known as: Delta-aminolevulinic acid, δ-ALA, ALA urine, 5-aminolevulinic acid, Delta-Aminolävulinsäure

Converter

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

mg/24 h µmol/24 h

Worked example

30.45 µmol/24 h (middle of the reference range) = 3.99 mg/24 h

Conversion formulas

mg/24 h	mg/24 h = µmol/24 h × 0.1311	µmol/24 h = mg/24 h × 7.626

Good to know

Delta-aminolevulinic acid (delta-ALA) in 24-hour urine is reported in mg/24 h or in µmol/24 h.

mg/24 h × 7.63 = µmol/24 h (exact factor 7.626).
Protect the sample from light. 24-hour urine results depend on a complete collection; a missed portion lowers the value.

Reference range

Unit	Adults
mg/24 h	0.9966 – 6.989
µmol/24 h	7.6 – 53.3

Source: MedlinePlus (NLM): Delta-ALA urine test · Last reviewed: 2026-10-17

Note from the source: Adults 1.0-7.0 mg per 24 hours (7.6-53.3 µmol/24 h) (MedlinePlus)

Frequently asked questions

How do I convert Delta-ALA (24-h urine) from µmol/24 h to mg/24 h?

mg/24 h = µmol/24 h × 0.1311. In the other direction: µmol/24 h = mg/24 h × 7.626.

What is the reference range of Delta-ALA (24-h urine)?

For adults the range is 7.6 – 53.3 µmol/24 h (MedlinePlus (NLM): Delta-ALA urine test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Delta-ALA (24-h urine)?

Common units are mg/24 h, µmol/24 h.