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Test Code 21OH 21-Hydroxylase Antibodies, Serum


Ordering Guidance


Testing for autoantibodies against 21-hydroxylase is recommended following confirmation of adrenal insufficiency to help differentiate between causes of primary adrenal insufficiency



Shipping Instructions


Ship specimen frozen on dry ice



Specimen Required


Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial to remove from cells or gel prior to shipping.


Secondary ID

607788

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Specimen Type

Serum

Specimen Minimum Volume

0.2 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen 14 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Reference Values

Negative

Day(s) Performed

Wednesday

Report Available

3 to 9 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83516