Lab Instruments | Illumina

Microarray scanners | High-quality array scanning systems

In Vitro Diagnostic (IVD) Instruments | Designed for clinical labs

Sequencing Platforms | Illumina NGS platforms

AmpliSeq for Illumina Sequencing Solution

Microarray & Genotyping Services

Cancer Genomics | Research solutions for multiple applications

Sequencing Services | NGS & whole-genome service providers

Products by type | Illumina

TruSight Oncology Product Family

When specifying accessible names via `aria-labelledby`, ensure that the 
label elements exist.

## Explanation

Accessible names are required for many parts of a page, including form controls.
One way to accomplish this is to use `aria-labelledby` to specify the ID or IDs of 
other elements which contain a label. For example:

```html
<h2 id="dialog-labell">Important message!</h2>
<dialog aria-labelledby="dialog-label">
```

In this example, the `aria-labelledby` for the `<dialog>` points to an ID of `dialog-label`,
which doesn't exist. The heading it refers to instead has an ID of `dialog-labell`, presumably 
a typo.

## Why this matters

It isn't usually clear when an accessible name is broken, even during user testing.

This check helps to identify where an element clearly intended to have a label, but
that label is missing.

When a label is broken, it may be impossible for a user of assistive technologies
to understand what that element does.

missing-aria-labelled-by

June 2025

May 2025

Illumina Inc

	Title / URL	Issues
	Lab Instruments \| Illuminawww.illumina.com/systems.html	27
	Microarray scanners \| High-quality array scanning systemswww.illumina.com/systems/array-scanners.html	17
	In Vitro Diagnostic (IVD) Instruments \| Designed for clinical labswww.illumina.com/systems/ivd-instruments.html	17
	Sequencing Platforms \| Illumina NGS platformswww.illumina.com/systems/sequencing-platforms.html	17
	AmpliSeq for Illumina Sequencing Solutionwww.illumina.com/products/by-brand/ampliseq.html	13
	Microarray & Genotyping Serviceswww.illumina.com/services/microarray-services.html	9
	Cancer Genomics \| Research solutions for multiple applicationswww.illumina.com/areas-of-interest/cancer/research.html	8
	Sequencing Services \| NGS & whole-genome service providerswww.illumina.com/services/sequencing-services.html	8
	Products by type \| Illuminawww.illumina.com/products/by-type.html	4
	TruSight Oncology Product Familywww.illumina.com/products/by-brand/trusight-oncology.html	4

Fix missing ARIA label IDs

Illumina Inc

Where this issue has occurred