Iodine, Serum/Plasma

Test Codes

EPIC: LAB1232074, Beaker: Iodine, Quest: 16599

Department

Send Outs

Specimen Collection Criteria

Collect (preferred): One Royal Blue-top tube with no additive.

Also acceptable: One Royal Blue-top tube with EDTA.

Physician Office/Draw Specimen Preparation

Centrifuge to separate serum or plasma from cells. Transfer serum or plasma to a plastic transport tube. Carefully pour serum into aliquot tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport.

Preparation for Courier Transport

Transport: 1.0 mL serum or plasma, refrigerated at (2-8°C or 36-46°F). (Minimum: 0.5 mL)

Rejection Criteria

• Received frozen.
• Anticoagulants other than EDTA.
• Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate serum or plasma from cells. Transfer serum or plasma to a plastic transport tube. Carefully pour serum into aliquot tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport

Transport: 1.0 mL serum or plasma, refrigerated at (2-8°C or 36-46°F). (Minimum: 0.5 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 10 days
Refrigerated (2-8°C or 36-46°F): 10 days
Frozen (-20°C/-4°F or below): Unacceptable

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 Quest Diagnostics, Wood Dale, IL.

Performed

Tuesday – Saturday.
Results available in 2-4 days.

Reference Range

Test Methodology

Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

CPT Codes

82542

Contacts

Last Updated

3/6/2026