- DNA Diagnostic Lab (DDL) tests can be
ordered on the Johns Hopkins Path 3 form.
- The general sample requirement is
6ml whole blood in lavender top (EDTA tubes, but see our
Sample Requirements for additional
- Be sure to include the patient's
ID#, the referrer's Hospital ID#, and the location ID# on the form.
- To provide additional information,
please complete a DDL requisition form (you do not need to include
billing information if drawn on campus) and fax it to 410-955-0484 or send it along
with the sample attached to the Path 3 form.
- DDL tests are ordered by Pathology
test code (Download a list of DDL Test Codes) . Add the desired test code(s) to the
Procedure section of the form (bottom right).
- If you need targeted testing for a
known mutation or prenatal testing, please contact the lab directly to coordinate
- Have the sample drawn in your area
and taken to the Core Lab or have the patient report to Express
Testing with the completed requisitions. Express Testing and
the Core Lab will route the sample to the DDL.
a sample is processed through the Core Lab, the DNA
Diagnostic Lab is not involved in billing.
- The prices provided on our web site
apply to outside referrals and do not necessarily reflect what your patient will be
charged. If a sample is drawn in 'regulated space', Maryland law
regulates the fees charged for laboratory services based on CPT codes,
relative value units (RVUs), and the current RVU reimbursement rate.
Neither the DNA Diagnostic Lab nor the Department of
Pathology control the assigned RVUs or RVU rates. Please contact
Pathology Customer Service (5-1921) to find out the current fee
for a test.
If the patient is uninsured, has a non-contracted insurance plan,
or will be paying out of pocket for any other reason:
- Have the patient
sample drawn in non-regulated space to minimize out-of-pocket
- Contact the DDL for
pricing information: 410-955-0483
- Include credit card
information or a check made out to Johns Hopkins University with
the completed requisition form.