Buccal Swab Requirements

Buccal Kit Collection Instructions – English
Buccal Kit Collection Instructions – Spanish
Relative Buccal Kit Collection Instructions – English

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 support@genedx.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.

Complimentary buccal swab kits are available for US and Canadian clients. To order kits, please visit our supplies page or email support@genedx.com. Contents include sponge swab, transport tube with tinted stabilizer solution, label for tube, and shipping box.

View Safety Data Sheet

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.