---
title: "Microgram: research glossary | Sable Peptides"
description: "A microgram (µg, sometimes written mcg) is one millionth of a gram (10⁻⁶ g), or one thousandth of a milligram. In peptide research, working solutions are o"
canonical: https://www.sablepeptides.co.uk/glossary/microgram
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Microgram

A microgram (µg, sometimes written mcg) is one millionth of a gram (10⁻⁶ g), or one thousandth of a milligram. In peptide research, working solutions are often expressed in µg/mL. Because the abbreviations mg and µg differ by a factor of 1,000, careful unit labelling is essential to avoid calculation errors.

Source: [en.wikipedia.org](https://en.wikipedia.org/wiki/Microgram)

## Related terms

-   [Peptide](/glossary/peptide)
-   [Milligram](/glossary/milligram)

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