Fibroblast Growth Factor 23 Intact, Serum

Abbrev Code:MMMISC   
Order Code:LAB4909Order Name:Laboratory Miscellaneous Order
Order Instructions:Fibroblast Growth Factor 23 (FGFT23) Level is no longer available. Cancel and reorder as MMMISC.
Methodology:Chemiluminescence-based quantitative sandwich immunoassay
CPT Codes: 83520 x1
Turnaround Time:Specimens are sent to the reference laboratory Mon-Fri; results are reported within 3-9 days.

This test uses a reagent or kit labeled by the manufacturer as Research Use Only. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.7 mL
Container:Red or gold (gel)

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 0.5 mL, 0.25 mL minimum. Store refrigerated.
Shipping Instructions:Ship at refrigerated temperatures (preferred).
Stability:14 days refrigerated; 90 days frozen.
Test Performed at or Referral Lab Lab Sendouts  (Mayo)
Referral Lab number:IFG23


Reference Range:Pediatric (<18 years): ≤ 52 pg/mL
Adults (≥ 18 years): ≤ 59 pg/mL
Use:Diagnosing and monitoring oncogenic osteomalacia; diagnosing x-linked hypophosphatemia or autosomal dominant hypophosphatemic rickets; predicting treatment response to calcitriol or vitamin D analogs in patients with renal failure.

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