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Test ID IFG23 Intact Fibroblast Growth Factor 23, Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Reporting Name

Intact Fibroblast Growth Factor 23

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  90 days

Report Available

2 to 8 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

LOINC Code Information

Test ID Test Order Name Order LOINC Value
IFG23 Intact Fibroblast Growth Factor 23 54390-0

 

Result ID Test Result Name Result LOINC Value
607216 Intact Fibroblast Growth Factor 23 54390-0

Forms

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

Renal Diagnostics Test Request (T830)

Oncology Test Request (T729)

Useful For

Diagnosing and monitoring tumor induced osteomalacia

 

Diagnosing X-linked hypophosphatemia or autosomal dominant hypophosphatemic rickets

 

Diagnosing familial tumoral calcinosis with hyperphosphatemia

Day(s) Performed

Tuesday, Thursday

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

83520

Specimen Minimum Volume

0.25 mL

Reference Values

Pediatric (<18 yrs): ≤52 pg/mL

Adults (≥18 yrs): ≤ 59 pg/mL

Method Name

Chemiluminescence-Based Quantitative Sandwich Immunoassay