Pathology Handbook

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PLEASE NOTE: Recent changes have been made to this Test

Recent changes for Microarray

Recent changes for Microarray
Date	Field	Changed From	Changed To
31st October 2024	Collection & Request Instructions	Adult-child: 5ml EDTA Infant: 0.5-1.0ml EDTA	Adult-child: 5ml EDTA Infant: 0.5-1.0ml EDTA For external request forms this test is covered by Medicare if eligibility requirements are met.

Date

Field

Changed From

Changed To

31st October 2024

Collection & Request Instructions

Adult-child: 5ml EDTA

Infant: 0.5-1.0ml EDTA

Adult-child: 5ml EDTA

Infant: 0.5-1.0ml EDTA

For external request forms this test is covered by Medicare if eligibility requirements are met.

Microarray

Alternative Names:

Microarray (Paediatric)
SNP microarray
CGH array
chromosome microarray
MA
Molecular Karyotype
Mol Karyotype
Downs Syndrome (Post Natal)

Laboratory:

Molecular

Test Code:

CHM

Medicare rebatable:

Specimen Types:

EDTA
Saliva

Container Types:

EDTA
Salivary Kit

Adults Volume or Mass:

5 mL

Minimum/Paediatric Volume or Mass:

1 mL

Collection & Request Instructions:

Collect at ambient temperature

Adult-child: 5ml EDTA

Infant: 0.5-1.0ml EDTA

For external request forms this test is covered by Medicare if eligibility requirements are met.

Transport Instructions:

Room Temperature

Assay Frequency:

Fortnightly

Method:

A chromosome microarray is a powerful tool used to look at sub microscopic changes in our genetic information that may impact health or development. Microarray is considered the gold standard test for the investigation of intellectual disability and developmental and behavioural concerns such as autism spectrum disorders and congenital malformations.

Please note, a conventional chromosome analysis or specific Prader-Willi/Angelman syndrome test can not be performed at the same time as a microarray analysis due to Medicare constraints.

A conventional chromosome analysis is recommended for neonates with suspected trisomy eg. Down syndrome.

Additional Notes:

Please see link below for external laboratory requirements

http://www.vcgs.org.au/pathology/sections/Cytogenetics/?docid=8bf38b05-46ca-4ebf-b3cf-992e00eff2b0

Routine analysis: 2-3 weeks

Urgent: 8-10 days

David Francis

Phone (03) 8341 6258 (Lab)

Phone (03) 8341 6282 (direct)

USEFUL LINKS

Frozen Section Booking Form

Printable Pathology Request Form

Order of Draw - Blood Samples