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HelpTest Code 23FBG Fibroblast Growth Factor-23 (FGF23), In Situ Hybridization
Additional Testing Requirements
If additional interpretation or analysis is needed, request PATHC / Pathology Consultation along with this test.
Shipping Instructions
Attach the green "Attention Pathology" address label (T498) to the outside of the transport container before putting into the courier mailer.
Necessary Information
A pathology/diagnostic report and a brief history are required.
Specimen Required
Specimen Type: Tissue
Supplies: Pathology Packaging Kit (T554)
Submit:
Formalin-fixed, paraffin-embedded tissue block
OR
5 Unstained, positively charged glass slides; sections 4-microns thick
Secondary ID
620249Useful For
Assessing fibroblast growth factor-23 (FGF23) expression
Method Name
In Situ Hybridization (ISH)
Specimen Type
SpecialSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Special | Ambient (preferred) | |
| Refrigerated | ||
Reject Due To
| Wet/frozen tissue | Reject |
| Cytology smears | Reject |
| Nonformalin fixed tissue | Reject |
| Nonparaffin embedded tissue | Reject |
| Noncharged slides | Reject |
| ProbeOn slides | Reject |
| Snowcoat slides | Reject |
Interpretation
This test, when not accompanied by a pathology consultation request, will be reported as either positive or negative. If additional interpretation or analysis is needed, request PATHC / Pathology Consultation along with this test.
Method Description
In situ hybridization on sections of paraffin-embedded tissue.(Unpublished Mayo method)
Day(s) Performed
Monday through Friday
Report Available
5 to 8 daysSpecimen Retention Time
Until staining is completePerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88365-Primary
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| 23FBG | Fibroblast Growth Factor-23, ISH | 104259-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 620250 | Interpretation | 50595-8 |
| 620251 | Participated in the Interpretation | No LOINC Needed |
| 620252 | Report electronically signed by | 19139-5 |
| 620253 | Material Received | 81178-6 |
| 620254 | Disclaimer | 62364-5 |
| 620255 | Case Number | 80398-1 |
Forms
If not ordering electronically, complete, print, and send a Immunohistochemical (IHC)/In Situ Hybridization (ISH) Stains Request (T763) with the specimen.