GeneDx :: Add-on Test

301-519-2100 • FAX 301-519-2892 • 207 PERRY PARKWAY GAITHERSBURG, MD 20877

Add-on Tests

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What is an "Add-on Test"?

An add-on test means ordering another test for a person whose specimen is already at GeneDx. In general, for any specimen that has been submitted to GeneDx Inc., additional tests may be ordered at any time.

Ordering an Add-on Test is easy. Just use the

Add-on Order Form .

What information must be submitted for ordering an additional test?

To add on testing, please fax (301-519-2892) or e-mail (genedx@genedx.com

) a request to GeneDx including the following information:

Patient first and last name
Date of birth
GeneDx Accession number (if available)
Test to be added
Method of payment/authorization
Billing address

Is another specimen is required?

No. In the rare event that the existing specimen is not sufficient for completing additional tests, you will be notified within a week after the add-on order has been received.

What else should be considered when ordering an add-on test?

If ordering physician and/or payment method has changed, please submit a
new requisition and payment option form , available on our website
For Institutional Billing:

Please note that the add-on order MUST include authorization from the party to be billed. Physicians, counselors, and medical professionals, please route your requests through the in-house or local laboratory that initially handled the specimen. For your convenience, use the Add-on Order Form .
Please be aware that the patient is responsible in all cases for fees not covered by the selected payment type.
If you would like to receive an e-mail confirming that we have received your add-on request, p lease provide your e-mail address in the section indicated on the Add-on order form .