Flecainide Level

Tambocor

Test Codes

EPIC: LAB1232236, Beaker: FLECAINIDE C, Quest: 5309

Department

Send Outs

Instructions

Patient Preparation:

Optimum time to collect sample: 1 hour before next dose.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.

Do not use Serum Separator Tubes (SST).

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport.

Preparation for Courier Transport

Transport: 2.0 mL serum, at room temperature (20-26°C or 68-78.8°F). (Minimum: 0.5 mL)

Rejection Criteria

• Lipemia.
• Gross hemolysis.
• Serum Separator (SST) tubes.
• Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport.

Transport: 2.0 mL serum, at room temperature (20-26°C or 68-78.8°F). (Minimum: 0.5 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 5 days
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 30 days

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

Wednesday, Saturday.
Results available in 4-6 days.

Reference Range

0.20-0.99 mcg/mL

Test Methodology

Chromatography / Mass Spectrometry

Interpretation

By report.

Clinical Utility

Flecainide – Monitoring the Flecainide concentration is used to assure compliance and avoid toxicity of this cardiac drug used to treat ventricular tachycardia and premature contractions.

CPT Codes

80181

Contacts

Last Updated

12/18/2025