Lab R&D for Biopharma Companies | Labcorp

Treatment Modalities & Product Testing | Labcorp

Labs Near You: No Appointment Needed for Testing | Labcorp

Tests for Allergy Symptoms | Labcorp

Page Not Found | Labcorp

Specialty & Reference Lab Testing for HCPs | Labcorp

Allergy testing at a Labcorp near you

Specialists | Labcorp

Health System, Payor & Employer Testing, Tools & Partnerships | Labcorp

Search Our Health Care Diagnostics Tests Menu | Labcorp

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

March 2025

February 2025

Laboratory Corp. of America

Title / URL	Issues
Lab R&D for Biopharma Companies \| Labcorpwww.labcorp.com/biopharma	5
Treatment Modalities & Product Testing \| Labcorpwww.labcorp.com/modalities	4
Labs Near You: No Appointment Needed for Testing \| Labcorpwww.labcorp.com/labs-and-appointments	4
Tests for Allergy Symptoms \| Labcorpwww.labcorp.com/allergies/patients	4
Page Not Found \| Labcorpwww.labcorp.com/invented-url-for-404-page	4
Specialty & Reference Lab Testing for HCPs \| Labcorpwww.labcorp.com/providers	4
Allergy testing at a Labcorp near youwww.labcorp.com/allergies	4
Specialists \| Labcorpwww.labcorp.com/providers/specialists	4
Health System, Payor & Employer Testing, Tools & Partnerships \| Labcorpwww.labcorp.com/organizations	4
Search Our Health Care Diagnostics Tests Menu \| Labcorpwww.labcorp.com/test-menu/search	4

Fix missing ARIA label IDs

Laboratory Corp. of America

Where this issue has occurred