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Test Code FL Fluoride, Plasma

Additional Codes


Powerchart: Fluoride Level Plasma

Epic: LAB989 Fluoride

Reporting Name

Fluoride, P

Useful For

Assessing accidental fluoride ingestion


Monitoring patients receiving sodium fluoride for bone disease or patients receiving voriconazole therapy

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Plasma Heparin

Specimen Required

Collection Container/Tube: Green top (sodium heparin)

Submission Container/Tube: Plastic vial

Specimen Volume: 3 mL

Specimen Minimum Volume

1.2 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma Heparin Refrigerated (preferred) 14 days
  Ambient  14 days
  Frozen  14 days

Reference Values

0.0-4.0 mcmol/L

Day(s) and Time(s) Performed

Tuesday; 8 a.m.

Test Classification

This test was developed and its performance characteristics 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.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FL Fluoride, P In Process


Result ID Test Result Name Result LOINC Value
8641 Fluoride, P 14726-4

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK


Mild OK; Gross OK



Method Name

Ion-Selective Electrode (ISE)