Instructions for requesting an ADAMTS-13 assay

Download and complete the ADAMTS-13 request form.
Note: if patient is not a UCLH ‘share care’ patient then the referring lab must provide a purchase order (PO) number for testing to be proceed.

Please also provide the email address of the bill paying finance department. 

Sending samples:

Ensure sample are sent via your local laboratory and result reporting email addresses are provided on the result form.

Urgent testing pathway:

For any urgent requests please call the UCLH switchboard (020 3456 7890) for an On Call Haemostasis consultant. Urgent requests will be processed within 24 hours of receipt.

To expedite processing, ensure the sample is couriered from your laboratory with a tracking number. This courier tracking number can be emailed to

Queries on testing, including additional reports, please email:

Note: additional reports can not be issued over the phone.