IL-18 (Interleukin-18)

Test Code

38282

CPT Codes
83520<br>Limited Access Code

Preferred Specimen

0.2 mL serum collected in each of two red-top tube (no gel) tubes

Minimum Volume

0.2 mL (x2) serum • 1 mL whole blood

Other Acceptable Specimens

3 mL whole blood collected in a no additive (red-top) tube or no additive (gold-top) tube

Instructions

Keep sample as whole blood for delivery to our lab within 48 hours of collection. If delivery cannot occur within 48 hours, separate serum from cells within 48 hours of collection. Freeze immediately at -20°C or lower.

Whole blood must remain at room temperature at all times after collection until received in our lab. Separated serum samples that have been frozen must be sent with enough dry ice to maintain a frozen state until received in our lab.

The lab operates Monday-Friday, 8:00 am to 5:00 pm (EST). Testing is not performed and samples cannot be received on weekends/certain holidays. First Overnight shipping is strongly recommended. Please call/fax (513-636-4685/513-636-3861) the tracking number so we may better track your specimen.

Transport Temperature

Serum: Frozen
Whole blood: Room temperature

Specimen Stability

Serum
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 6 months

Whole blood
Room temperature: 24 hours
Refrigerated: Unacceptable
Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Whole blood sent frozen • Blood collected in wrong container/tube type • Separated serum sent room temperature or refrigerated.

Methodology
Automated Microfluidics Immunoassay Method

FDA Status
This test was developed and its performance characteristics determined by the Cancer and Blood Disease Institute Clinical Laboratories at CCHMC. It has not been cleared or approved by the FDA. This test is used for clinical purposes. It should not be regarded as investigational or for research.

Setup Schedule

Set up: Every week; Report available: 2 weeks

Reference Range

≤477 pg/mL

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.