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A B C D E F G H I J K L M N O P Q

Test Identifier Information

 
Registration CodePNC
Method

Chorionic villus tissue is cleaned, finely chopped and cultured in growth medium for approximately 10 days and then harvested at the metaphase stage of the cell cycle when chromosomes are most condensed and visible by light microscopy. 

Microscopic analysis (karyotyping) is performed on GTL-banded chromosome preparations. 

 

Diagnostic Use / Indications

Detection of microscopically visible chromosome rearrangements (>10Mb). ie.

Suspected chromosome aneuploidy eg. Monosomy X (Turner syndrome), Trisomy including mosaicism 

Confirmation of abnormal rapid FISH screen 

Detection of known parental chromosome rearrangement previously detected by G-banded chromosome analysis (karyotype)

External Price$628.39(Exclusive of GST)
  

Specimen Collection

 
Pre-Testing Requirements

Appropriate counselling by LMC or obstetrician.

Specimen Collection Protocols
TestVolume
Chromosome Analysis20mg clean chorionic villi
Chromosome Analysis + FISHAt least 25mg clean chorionic villi
DNA/Biochemical AnalysisAt least 30mg clean chorionic villi
 (4-stranded branch of vill = approx 5mg)

All samples should be taken in a sterile manner into a universal container with CVS transport medium (ensure expiry date is valid). 

Send in "Prenatal Transport" pack (see below) as soon as possible. Delay can affect cell growth. Keep at room temperature. DO NOT FREEZE. 

"Prenatal Transport\' packs are available from the Cytogenetics laboratory.

Patient Specimenchorionic villus (CVS)
Sample Delivery to LabPlease notify us on dispatch by phone or fax
  

CHLabs Laboratory

 
DepartmentHaematology - Cytogenetics
Contact Details Email Email
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Contact Phone Number03 364 1425
Test AvailabilityMon-Fri, business hrs - all prenatal requests deemed urgent.
Turnaround Time15 days
Reference Interval

Comment on report

Interpretation

Comment on report

Additional Information

Unacceptable specimens - Those received without patient identifiers clearly displayed on specimen containers. Those with unsuitable or insufficient villus material.

Samples must be sterile. Very occasionally, poor cell growth will result in a delayed result. This is more frequent with small samples.

Delphic Number Test Number7930

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