> ## Documentation Index
> Fetch the complete documentation index at: https://docs.junction.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Testing Modalities

> Compare where and how samples are collected for at-home test kits, mobile phlebotomy, walk-in tests, and on-site collection.

A testing modality defines how and where a patient's sample is collected. The modality affects appointment or shipping workflows, available [patient communications](/lab/workflow/communications), and the statuses you receive as the order progresses.

| Modality | Collection location | Who collects the sample? | Scheduling | Sample transport |
| - | - | - | - | - |
| [At-home test kit](#at-home-test-kits) | Patient's location | Patient | Not required | Patient returns the kit by mail |
| [Mobile phlebotomy](#mobile-phlebotomy) | Patient's home or office | Mobile phlebotomist | Required | Phlebotomist delivers the sample to the laboratory |
| [Walk-in test](#walk-in-tests) | Partner laboratory Patient Service Center (PSC) | Laboratory staff | Optional where supported | Managed by the laboratory |
| [On-site collection](#on-site-collection) | Customer-managed collection location | Collection staff | Managed by the customer | Defined by the collection program |

## At-home test kits

Junction ships a collection kit to the patient. The patient collects their sample by following the kit instructions and returns it to the laboratory by mail. This modality does not require an appointment, but your workflow must account for shipping, collection, and return-shipping statuses.

See the [At-Home Test Kit Overview](/lab/testkits/overview) for registered and registrable kit workflows.

## Mobile phlebotomy

A mobile phlebotomist visits the patient's home or office, collects the sample, and delivers it to the laboratory. Appointment availability depends on the patient's address and the supported phlebotomy providers in that area.

See the [Mobile Phlebotomy Overview](/lab/at-home-phlebotomy/overview) for coverage, appointment, and address requirements.

## Walk-in tests

The patient visits a partner laboratory's Patient Service Center, such as a supported Quest, Labcorp, or BioReference location. The patient can generally visit during the location's operating hours after the requisition is ready. Appointment scheduling is optional and currently available through Junction for supported Quest locations.

See the [Walk-in Overview](/lab/walk-in/overview) for requisition, location, and appointment guidance.

## On-site collection

The patient has their sample collected at a customer-managed location, such as a clinic, employer health center, or wellness event. The customer manages when and where collection occurs instead of directing the patient to a laboratory-owned Patient Service Center.

On-site collection is currently in beta. See the [On-site Collection Overview](/lab/on-site-collection/overview) for workflow details.


## Related topics

- [Order Lifecycle](/lab/testkits/order-lifecycle.md)
- [Patient Communications](/lab/workflow/communications.md)
- [Introduction](/lab/overview/introduction.md)
- [Order and Appointment Lifecycle](/lab/at-home-phlebotomy/order-appointment-lifecycle.md)


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