Urine & CSF

Normetanephrine (24-h urine) unit converter

Normetanephrine excreted in 24-hour urine (phaeochromocytoma work-up)

Also known as: Urinary normetanephrine, Normetanephrine urine 24h, Normetanephrin im Urin

Converter

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

µg/24 h nmol/24 h

Worked example

1900 nmol/24 h (middle of the reference range) = 348 µg/24 h

Conversion formulas

µg/24 h	µg/24 h = nmol/24 h × 0.1832	nmol/24 h = µg/24 h × 5.458

Good to know

Normetanephrine in 24-hour urine is reported in µmol/24 h, nmol/24 h or in µg/24 h.

µg/24 h × 5.46 = nmol/24 h (exact factor 5.4585); 1 µmol/24 h = 1000 nmol/24 h.
Some laboratories report the hydrochloride salt, which has a higher molar mass; check the report. Several drugs interfere.

Reference range

Unit	Adults	Men	Women
µg/24 h	0 – 696.2	0 – 696.2	0 – 549.6
nmol/24 h	0 – 3800	0 – 3800	0 – 3000

Source: Newcastle Hospitals Laboratories: Metanephrines, 24h collection, urine · Last reviewed: 2026-10-19

Note from the source: Adults: women up to 3.0 µmol/24 h, men up to 3.8 µmol/24 h (LC-MS/MS; Newcastle Hospitals Laboratories). Children have age-dependent ranges; several drugs interfere

Frequently asked questions

How do I convert Normetanephrine (24-h urine) from nmol/24 h to µg/24 h?

µg/24 h = nmol/24 h × 0.1832. In the other direction: nmol/24 h = µg/24 h × 5.458.

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

For adults the range is 0 – 3800 nmol/24 h (Newcastle Hospitals Laboratories: Metanephrines, 24h collection, urine). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

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

Common units are µg/24 h, nmol/24 h.