7-dehydrocholesterol, (Plasma / Serum)

Diagnostic Use

Used for diagnosing Smith Lemli Opitz syndrome

Department

Specialist Biochemistry

Delphic Registration Code

DHC7

Laboratory Handling

Phlebotomy

Samples need to be protected from light and frozen

Separating

Samples need to be protected from light and frozen

Synonyms

7-dehydroxycholesterol
Campesterol
Dehydrocholesterol-7
DHC
Neutral sterols
Plant Sterols
Sitosterol
Smith Lemli Opitz

Turnaround Time

8 weeks

Test Code

5817

Specimen Type

• Serum
• Plasma
• Amniotic Fluid

Specimen Requirements

Tube/Container Type:

Preferred

• EDTA (Lavender Cap)

Preferred if West Coast

• Lithium Heparin - Gel (Light Green Cap)

Acceptable

• Lithium Heparin - Non-gel (Green Cap)
• Lithium Heparin - Gel (Light Green Cap)

Preferred Sample Volume (ml)

1.0

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• EDTA (Lavender Cap)

Acceptable

• Lithium Heparin - Non-gel (Green Cap)
• Lithium Heparin - Gel (Light Green Cap)

Preferred Sample Volume (ml)

0.5

Additional Specimen Information

Specimen Collection Protocols - Plasma samples must be protected from light.

However for amniotic fluid 7-DHC send cell free amniotic fluid protected from light. Minimum 1.0 mL

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

0.2

Transport to Lab

Frozen
If overnight - Frozen

Additional Referral/Aliquot Information

Minimum 200 uL plasma or serum. Preferable 500 uL plasma or serum protected from light. 1mL amniotic fluid protected from light.

Test Method

GCFID

Non-Funded Test Cost

$547.91 (Exclusive of GST)

Billing Code

5817

Referred to SA pathology Adelaide Womens & Childrens Hospital

Contact Information

Enquiry Form