Urine & CSF

3-Methoxytyramine (24-h urine) unit converter

3-Methoxytyramine excreted in 24-hour urine (dopamine-producing tumours)

Also known as: 3-MT urine, Urinary 3-methoxytyramine, 3-Methoxytyramin im Urin

Converter

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

µg/24 h nmol/24 h

Worked example

1400 nmol/24 h (middle of the reference range) = 234 µg/24 h

Conversion formulas

µg/24 h	µg/24 h = nmol/24 h × 0.1672	nmol/24 h = µg/24 h × 5.981

Good to know

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

µg/24 h × 5.98 = nmol/24 h (exact factor 5.9805); 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
µg/24 h	0 – 468.2
nmol/24 h	0 – 2800

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

Note from the source: Adults up to 2.8 µmol/24 h, women and men alike (LC-MS/MS; Newcastle Hospitals Laboratories). No range is given there for young children

Frequently asked questions

How do I convert 3-Methoxytyramine (24-h urine) from nmol/24 h to µg/24 h?

µg/24 h = nmol/24 h × 0.1672. In the other direction: nmol/24 h = µg/24 h × 5.981.

What is the reference range of 3-Methoxytyramine (24-h urine)?

For adults the range is 0 – 2800 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 3-Methoxytyramine (24-h urine)?

Common units are µg/24 h, nmol/24 h.