7-Dehydrocholesterol (Smith-Lemli-Opitz Screen), Plasma

7-Dehydrocholesterol (Smith-Lemli-Opitz Screen)

Order Code:	7DHCH
Epic Lab Code:	LAB2516
Order Form:	A-1a Miscellaneous Request or Epic Req

Commercial Mail-out Laboratory
6240 RCP
356-3527

Specimen:

Plasma

Collection Medium:

Green top tube 4 mL (Na Heparin)

Alternate Collection Media:

Pink top tube

Minimum:

Preferred minimum: 1 mL sodium heparin plasma from a fasting patient Absolute minimum: 0.2 mL

Delivery Instructions:

Deliver to laboratory immediately after collection.

Analytic Time:

within 10 days upon receipt at reference laboratory

Reference Range:

Negative (reported as positive or negative) Quantitative results are provided when positive

Comments:

The enzymatic tests for measuring plasma cholesterol quantitate all 3 hydroxysterols and are unreliable for diagnosis for SLO.

Methodology:

Gas Chromatography-Mass Spectrometry (GC-MS)

CPT Code:

82541