Fibroblast growth factor is involved in phosphate metabolism. Over-expression leads to phosphate excretion. High levels are found in hypophosphataemic rickets. Clinical indication for request: a marker for the phosphate-wasting condition oncogenic osteomalacia and also hypophosphataemic rickets.
Tube
04 (EP) – EDTA Plasma
ID
Tests&Tubes0274
Additional Information
Fasting sample required. Patient must not be ferritin deficient. Sample should be sent to the lab within one hour of collection.
FGF23 C-terminal is the front line test for FGF23, see separate entry. Intact FGF23 is preferred in patients who have reduced renal function (CKD stage 3+).
Turn around
Turnaround time stated by Norfolk & Norwich: 4 weeks.
Send to
Blood Sciences LGI
(Test referred to: Norfolk & Norwich University Hospital.)
Advice
Full information on all referred tests can be found on the referred tests information database, EQMS reference BSF2REC17003.
Collection Con
Instructions to lab: Centrifuge, separate and freeze plasma within 1h of sample collection.
Minimum volume: 0.6mL.
Sample REQ
Blood
Ref. Range Notes
33-110 pg/mL
Units
pg/mL