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HelpTest Code FL Fluoride, Plasma
Reporting Name
Fluoride, PPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Assessing accidental fluoride ingestion
Monitoring patients receiving sodium fluoride for bone disease or patients receiving voriconazole therapy
Method Name
Ion-Selective Electrode (ISE)
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Green top (sodium heparin)
Submission Container/Tube: Plastic vial
Specimen Volume: 3 mL
Collection Instructions: Centrifuge and aliquot plasma into a plastic vial. Glass tubes are not acceptable.
Specimen Type
Plasma HeparinSpecimen Minimum Volume
1.2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma Heparin | Refrigerated (preferred) | 14 days | |
| Ambient | 14 days | ||
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
<4.1 mcmol/L
Interpretation
Humans exposed to fluoride-treated water typically have plasma fluoride in the range of 1 to 4 mcmol/L. Those who are not drinking fluoride-treated water have plasma fluoride less than 1 mcmol/L. Plasma fluoride values greater than 4 mcmol/L indicate excessive exposure and are associated with periostitis.
Day(s) Performed
Tuesday
Report Available
2 to 8 daysTest 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
82735
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FL | Fluoride, P | 14726-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8641 | Fluoride, P | 14726-4 |