From the LEF FAQs, you can order a blood lab kit.
Q) What are the blood test requisition options?
A) Your blood test requisition options are LabCorp requisition form and blood lab kit. If you choose "LabCorp Requisition Form", you will receive a form to present to a Patient Service Center in your area. The requisition you receive will have all the ordering information necessary for you to have your blood drawn. Please note that this option is not allowed in the states of NY, NJ, RI, MA or MD.
Alternatively, if you choose "Blood Lab Kit", you will receive a kit containing all the necessary blood collection tubes, instructions and pre-paid shipping labels. It will be necessary for you to find a local doctors office, hospital, or local clinic to draw and process your blood. A local draw fee may be incurred.