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This test is performed on a blood sample.
The kit for this test includes a lithium heparin green top blood tube, packaging materials for transporting the blood sample in the post, a request form and a pre-paid envelope.
To complete the test: have the blood taken and put in the blood tube (see blood letting information), make sure that your name and date of birth are clearly marked on the tube. Check that your details are correct on the request form. Using the packaging material provided prepare the sample for posting in the enclosed envelope. Please, make sure that the request form is sent along with the samples. Do not post the sample on a Friday. Please let me have the details of your GP and any diagnoses which you have been given so that I can write to him/her with the results of the test and my comments and suggestions for management.