A variety of different ADAMTS13 assays are available within UCLH and HSL testing laboratories which in our opinion has led to major advances in the diagnosis and treatment of TTP and other related TMAs.

Additional assays may be required based on the initial ADAMTS13 activity results and clinical details provided.

To request an assay, please download and complete a request form below. All request forms and samples should be sent to:

HSL Haemostasis Laboratory
Haematology Department
60 Whitfield Street
London, W1T 4EU

For further laboratory information please contact UCLH.Haemostasis@tdlpathology.com or 02034478529. For clinically urgent samples please discuss with the TTP SPR or consultant.