To ensure that a patient’s test is billed to their 2024 health benefits, testing must be started before the end of the year. For exome, genome, or Xpanded testing, if you do not expect parental samples to be received before the end of the year, please contact us at support@genedx.com to determine how to proceed.
Exceptions
Dried blood spots (DBS) are not accepted if the patient has ever received an allogeneic bone marrow/stem cell transplant. For these patients, DNA from cultured fibroblasts is the required specimen type. GeneDx can provide a punch biopsy kit and can culture fibroblasts on site, as needed.
Volume
For best results, send 8 spots per person, of 10mm diameter, completely filled. If 8 spots are not available, send as many as possible to reduce the chance of incomplete or delayed results. Minimum 2.
Labeling
Label with the patient name plus a second identifier such as date of birth, specimen ID or medical record number. Name and 2nd identifier on the specimen label must match what is on the test order.
Stability
The blood on the DBS cards should dry at room temperature for at least 3 hours after collection.
Rejection
Dried blood spots will be rejected if submitted for any test for which DBS is not listed as an alternative specimen, if there is insufficient volume, or if the patient has had an allogeneic bone marrow transplant.
Shipping
Ideal handling is to ship immediately, after drying, for overnight delivery with arrival Monday-Saturday:
Ship to:
GeneDx
207 Perry Parkway
Gaithersburg MD 20877
Phone:
1-301 -519-2100
