Urine & CSF

Porphobilinogen (24-h urine): convert µmol/24 h to mg/24 h

mg/24 h = µmol/24 h × 0.2262

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µmol/24 h mg/24 h

µmol/24 h → mg/24 h	mg/24 h = µmol/24 h × 0.2262
mg/24 h → µmol/24 h	µmol/24 h = mg/24 h × 4.42

Highlighted: values inside the adult reference range.

0 – 18 µmol/24 h = 0 – 4.072 mg/24 h

Source: MedlinePlus (NLM): PBG urine test · Last reviewed: 2026-10-19

Frequently asked questions

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

mg/24 h = µmol/24 h × 0.2262. For example, 10 µmol/24 h equals 2.26 mg/24 h.

How many mg/24 h are 10 µmol/24 h?

10 µmol/24 h equal 2.26 mg/24 h (Porphobilinogen (24-h urine)).

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

µmol/24 h = mg/24 h × 4.42.