Fibroblast Growth Factor 23
Test Codes
EPIC: LAB7598, Beaker: XMISC, Mayo: IFGF23
Department
Send Outs
Specimen Collection Criteria
Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.
Physician Office/Draw Specimen Preparation
Centrifuge to separate serum from cells. Transport to a plastic transport tube and refrigerate (2-8°C or 36-46°F).
Preparation for Courier Transport
Transport: 0.5 mL serum refrigerated (2-8°C or 36-46°F). (Minimum: 0.25 mL)
Rejection Criteria
Specimens not collected and processed as indicated.
In-Lab Processing
Centrifuge to separate serum from cells. Transport to a plastic transport tube and refrigerate (2-8°C or 36-46°F).
Transport: 0.5 mL serum refrigerated (2-8°C or 36-46°F). (Minimum: 0.25 mL)
Storage
Specimen Stability for Testing:
Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 90 days
Specimen Storage in Department Prior to Disposal:
Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.
Laboratory
Sent to Mayo Clinic Laboratories in Rochester, MN.
Performed
Wednesday.
Results available in 2-9 days.
Reference Range
By report.
Test Methodology
Chemiluminescence Based Quantitative Sandwich Immunoassay.
Clinical Utility
- Diagnosing and monitoring oncogenic osteomalacia.
- Possible localization of occult neoplasms causing oncogenic osteomalacia.
- Diagnosing X-linked hypophosphatemia or autosomal dominant hypophosphatemic rickets.
- Diagnosing familial tumoral calcinosis with hyperphosphatemia.
- Predicting treatment response to calcitriol or vitamin D analogs in patients with renal failure.
CPT Codes
83520
Contacts
Send Outs Laboratory – RO
248-551-9045
Name: Send Outs Laboratory – RO
Location:
Phone: 248-551-9045
Last Updated
7/21/2024
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