What does the Do not re-use (single use) symbol look like?

A large numeral 2 inside a circle, crossed by a diagonal line. It is also called “Crossed-out 2”, “Do not reuse”, “Single use”, “Single-use device” and “Use only once”.

Which standard defines the Do not re-use (single use) symbol?

It is listed as ISO 15223-1-5.4.2 and ISO 7000-1051.

Do not re-use (single use) symbol: a large numeral 2 inside a circle, crossed by a diagonal line — ISO 15223-1-5.4.2, ISO 7000-1051

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Medical device label symbols Medical device & pharmacy labels

Do not re-use (single use)

A large numeral 2 inside a circle, crossed by a diagonal line. · also called “Crossed-out 2”, “Do not reuse”, “Single use”, “Single-use device”, “Use only once”

What the Do not re-use (single use) symbol means

Single use only

The device is meant for one use only, or for one patient during a single procedure, and must not be used again. The same symbol is read as "single use" or "use only once".

Source · Official website Medical device manufacturer's digital symbols glossary · checked Nov 11, 2026

Where it appears

Medical device label

ISO 15223-1
—This meaning

Questions about the Do not re-use (single use) symbol

What does the Do not re-use (single use) symbol mean?: The device is meant for one use only, or for one patient during a single procedure, and must not be used again. The same symbol is read as "single use" or "use only once".
What does the Do not re-use (single use) symbol look like?: A large numeral 2 inside a circle, crossed by a diagonal line. It is also called “Crossed-out 2”, “Do not reuse”, “Single use”, “Single-use device” and “Use only once”.
Which standard defines the Do not re-use (single use) symbol?: It is listed as ISO 15223-1-5.4.2 and ISO 7000-1051.

Checked against the source · Nov 11, 2026 · How we verify

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