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Test Code THSD7SO Thrombospondin Type-1 Domain-Containing 7A Antibodies, Serum

Additional Codes

Mayo Test Code: THSD7


Specimen Required


Supplies: Sarstedt 5 mL Aliquot Tube (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container: Plastic vial

Specimen Volume: 1 mL

Collection Information: Centrifuge and aliquot serum into plastic vial within 2 hours of collection.


Useful For

Distinguishing primary from secondary membranous nephropathy cases with antibodies against THSD7A

Method Name

Indirect Immunofluorescence Assay (IFA)

Reporting Name

THSD7A Ab, S

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  8 hours

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Reference Values

Negative

Cautions

This test should not be used as a stand-alone test but as an adjunct to other clinical information. A diagnosis of primary or secondary membranous nephropathy (MN) should not be made based on a single test result. The clinical symptoms, results on physical examination, and laboratory tests (eg, serological tests), when appropriate, should always be taken into account when considering the diagnosis of primary versus secondary MN.

 

Absence of circulating autoantibodies does not rule out a diagnosis of primary MN.

Day(s) Performed

Tuesday

Report Available

3 to 7 days

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

86255

LOINC Code Information

Test ID Test Order Name Order LOINC Value
THSD7 THSD7A Ab, S 93339-0

 

Result ID Test Result Name Result LOINC Value
THSD7 THSD7A Ab, S 93339-0

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Kidney Transplant Test Request

-Renal Diagnostics Test Request (T830)