Smith-Lemli-Opitz Screen, Plasma

Test Code

15992

CPT Codes
82542<br /> **This test is not available for New York patient testing**

Includes

7-Dehydrocholesterol and 8-Dehydrocholesterol

Preferred Specimen

0.5 mL plasma collected in a sodium or lithium heparin (green-top) tube

Patient Preparation
Fasting (12 hours or more, infants just before next feeding)

Minimum Volume

0.2 mL

Other Acceptable Specimens

Plasma collected in an: EDTA (lavender-top) tube, or EDTA (pearl white-top) (plasma gel), or ACD (yellow-top) tube

Instructions

Spin down within 45 minutes of draw.

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 14 days
Refrigerated: 28 days
Frozen: 92 days

Methodology
Gas Chromatography/Mass Spectrometry (GC/MS)

Setup Schedule

Set up: Batched once a week; Report available: 3-9 days

Report Available

9 Days

Reference Range

7-Dehydrocholesterol	≤2.0 mg/L
8-Dehydrocholesterol	≤0.3 mg/L

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.