How to refer a patient

This page explains how to refer a patient for a TAS treatment.

Coming soon: online referrals for plasma exchange

We are introducing a new digital platform, 'TAS Connect', to streamline and improve the referral process for plasma exchange services across our national network.

From 13 January 2026, all referrals to Therapeutic Apheresis Services for the plasma exchange service in Bristol and Plymouth must be submitted using our new online referral form.

Keep an eye out for updates here, and email updates.

Making a referral

The steps you need to follow to make a referral depend on whether or not your Trust has a Service Level Agreement (SLA).

I don't know if my Trust has an SLA

Telephone 0300 020 0496 (24/7, 365 days a year) to check if your Trust has an SLA.

Trusts with an SLA

Urgent referrals

From Monday to Friday, 8am to 5pm, follow these steps:

Step 1: telephone 0300 020 0496, select the option for your nearest unit
Step 2: email a completed treatment request form (Word 55KB) to your closest TAS unit (please note this link will take you to the NHSBT website for the public)

Outside of hours. follow these steps:

Step 1: telephone 0300 020 0496, select option 1
Step 2: email a completed treatment request form (Word 55KB) to TAS.Referrals@nhsbt.nhs.uk

Non-urgent referrals

Email a treatment request form to your closest TAS unit (please note, this link will take you to the NHSBT website for the public)

The team will be in touch with you the next working day. Telephone 0300 020 0496 if you don't hear back the next working day

Trusts without an SLA

Page last reviewed: 4 March 2025