FirstStepDx PLUS should be ordered by a doctor or other healthcare provider (physician assistant, nurse practitioner) for an individual with clinical features of autism spectrum disorder or other disorders of childhood development.
The FirstStepDx PLUS® collection kit includes a Test Requisition Form/Informed Consent and buccal (cheek) swab with sample collection instructions. Completed kits can be sent to Lineagen by FedEx. Phlebotomy (blood draw) kits are also available and include prepaid FedEx labels.
For collection kits and support, please submit a request online or call us at 888.888.OPEN (888.888.6736).