380 µmol/L uric acid to mg/dL

About uric acid and these units

Uric acid is a breakdown product of purine metabolism, reported on metabolic and gout-related panels. Uric acid appears in mg/dL on US lab reports and in µmol/L on UK, Canadian, Australian, and most European lab reports. The factor (59.48) reflects reporting in micromoles per liter.

Where the 59.48 conversion factor comes from

mg/dL is a mass-per-volume unit. µmol/L is a moles-per-volume (molar concentration) unit. To convert between them you need the molecular weight of the substance, because that determines how many moles of it fit into a given mass.

For uric acid, the reference molecular weight is 168.11 g/mol. Working through the unit algebra:

• The factor is fixed by the molecular weight (168.11 g/mol) together with the mass and volume prefixes of the two units, since a molar concentration counts molecules and a mass concentration weighs them.
• For uric acid this works out to 59.48 mg/dL per µmol/L (divide µmol/L by 59.48 to get mg/dL).
• The inverse (mg/dL → µmol/L) is 0.0168.

Step-by-step: converting 380 µmol/L of uric acid by hand

1. Start with the lab value: 380 µmol/L.
2. Look up the conversion factor for uric acid: 59.48 µmol/L per mg/dL. Going from SI back to conventional means dividing by this factor (equivalently, multiplying by 0.0168).
3. Divide: 380 ÷ 59.48 = 6.389.
4. Attach the conventional unit: 6.389 mg/dL.

Inverse check: 6.389 mg/dL × 59.48 = 380 µmol/L ✓.

Companion conversions for nearby uric acid values

If your lab reported a number close to but not exactly 380 µmol/L, the table below covers the surrounding range so you don't need to re-run the arithmetic.

A note on precision

Clinical chemistry assays for uric acid are typically precise to two or three significant figures. The exact factor 59.48 is itself a rounded number, and the molecular weight that produces it (168.11 g/mol) is conventionally rounded. So while the calculator displays 6.389 mg/dL for 380 µmol/L, reporting more decimal places than your original measurement supports is false precision.

Common questions

What is 380 µmol/L uric acid in mg/dL?

380 µmol/L of uric acid equals 6.389 mg/dL. The conversion factor for uric acid is 59.48 (divide µmol/L by 59.48 to get mg/dL).

How do I convert µmol/L to mg/dL for uric acid?

uric acid has a conversion factor of 59.48. Formula: 380 µmol/L ÷ 59.48 = 6.389 mg/dL. Inverse: 6.389 mg/dL × 59.48 = 380 µmol/L.

Why does uric acid have a different conversion factor than other biomarkers?

Each biomarker's mg/dL ↔ µmol/L factor is set by its molecular weight, because µmol/L is a molar concentration. For uric acid, the reference molecular weight is 168.11 g/mol, which gives a factor of 59.48.

Where is µmol/L used and where is mg/dL used?

Uric acid appears in mg/dL on US lab reports and in µmol/L on UK, Canadian, Australian, and most European lab reports. The factor (59.48) reflects reporting in micromoles per liter.

How precise should I report the converted value?

Lab assays for uric acid are typically precise to about two or three significant figures. Reporting more decimal places than your original measurement supports is false precision. For a reading of 380 µmol/L, 6.389 mg/dL is appropriate; further decimals are not.

Related conversions and reference

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