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Fluoride

Test Codes

ARUP: 91341, Order as Miscellaneous Send Out (Beaker: XMISC).

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Lavender-top EDTA tube.

Do not use Serum Separator Tubes.

Physician Office/Draw Specimen Preparation

Centrifuge to separate serum or plasma from cells ASAP within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 2.0 mL serum or plasma, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)

Rejection Criteria

Serum Separator (SST) tubes.

Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 2.0 mL serum or plasma, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 30 days
Refrigerated (2-8°C or 36-46°F): 30 days
Frozen (-20°C/-4°F or below): 28 months

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to ARUP Laboratories, Salt Lake City, UT, forward to National Medical Services (NMS), Willow Grove, PA.

Performed

Varies.
Results available within 8-11 days.

Reference Range

By report.

Test Methodology

Quantitative Ion-Specific Electrode.

Interpretation

By report.

Clinical Utility

This assay is used in monitoring patients receiving sodium fluoride for bone disease. It is also useful in monitoring for accidental ingestion.

CPT Codes

82735

Contacts

Last Updated

10/3/2023