GenomeXpress and GenomeSeqDx can only accept buccal samples for relatives for duo and trio testing. Buccal samples are not accepted for the congenital sideroblastic anemia test. Multiple permitted tests can be ordered on one swab but the DNA yield is limited and additional specimens may be needed to complete testing. For more information email email@example.com.
Buccal swabs are not accepted if the patient has ever received an allogeneic bone marrow/stem cell transplant due to the potential for a high percentage of donor DNA to be present. For these patients, DNA from cultured fibroblasts is the required specimen type. GeneDx can provide a punch biopsy kit and can culture fibroblasts onsite, as needed.
Follow enclosed directions.
Use the labels provided to place the patient name and date of birth on the transport tube.
Specimens may be held at room temperature before overnight shipping for up to 1 week (preferred) or up to 60 days (manufacturer’s limit).
Specimens will be rejected if the tinted stabilizing solution leaks out or if the transport tube is not labeled with patient name and additional ID.
Use the FedEx Clinical Pak provided. Ship overnight for arrival Monday-Saturday.
GeneDx, 207 Perry Parkway, Gaithersburg MD 20877
GeneDx Buccal Swab Collection Instructions