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HelpTest Code THSIF Thrombospondin Type 1 Domain Containing 7A (THSD7A), Immunofluorescence
Ordering Guidance
If additional interpretation/analysis is needed, request PATHC / Pathology Consultation along with this test and send the corresponding renal pathology light microscopy and immunofluorescence (IF) slides (or IF images on a CD), electron microscopy images (prints or CD), and the pathology report.
Necessary Information
A preliminary pathology report is required for testing to be performed. Send information with specimen. The laboratory will not reject testing if a reason for testing is not provided; however appropriate testing and interpretation may be compromised or delayed. If not provided, an appropriate indication for testing may be entered by Mayo Clinic Laboratories.
Specimen Required
Specimen Type: Kidney tissue
Preferred: 2 Unstained positively charged glass slide (25- x 75- x 1-mm) per test ordered; paraffin sections 3 to 4-microns thick
Acceptable: Formalin-fixed, paraffin-embedded (FFPE) kidney tissue block
Additional Information: Broken or cracked unstained slides will be rejected. Stained slides that were broken and repaired (ie, double mounted) at the client site will not be rejected, as, in most cases, they can still be reviewed under the microscope. However, due to the double mounting, digital scanning cannot be performed.
Specimen Type
SpecialSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Special | Ambient (preferred) | |
| Frozen | ||
| Refrigerated | ||
Reject Due To
Broken or cracked unstained slides are not compatible with the instrumentation used in our performing laboratories and will be rejected. Additional material may be requested. Attempts will be made to repair broken or cracked stained slides; however, if they are unable to be repaired (ie, shattered in transit), they will be rejected and discarded due to safety concerns.Specimen Retention Time
Until reportedPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88346-Primary IF
88350-If additional IF
Specimen Minimum Volume
See Specimen Required
Day(s) Performed
Monday through Friday