Karyotype, GTG-banding -Tissue
Alternate test name
Gene name / Alternate gene name
- All chromosomes
Genome Diagnostics - Cytogenetics
Method and equipment
Cell culture; G-banding
Expected turn-around time
Minimum 2-3 mm3 fresh tissue (skin biopsy)
Storage and transportation
Refrigerate until time of shipment. Ship sample overnight at room temperature for receipt at SickKids Cytogenetics Laboratory within 24 hours of collection.
Place in sterile container with SickKids Cytogenetics transport media or other sterile culture media.
The Hospital for Sick Children
Division of Genome Diagnostics
555 University Avenue, Black Wing, Room 3416
Phone: 416-813-7200 ext. 2
Hours: Monday to Friday, 8 a.m. to 4:30 p.m.
Off hours: Please send to Rapid Response Laboratory, 555 University Avenue, Room 3642
Email Molecular Lab: firstname.lastname@example.org
Email Cytogenetics: email@example.com
Background and clinical significance
Karyotyping of fibroblasts derived from tissue biopsy is usually performed when mosaicism is suspected in a patient, or when results cannot be obtained from peripheral blood.
Constitutional chromosome disorders, including aneuploidy, chromosome rearrangements, and mosaicism
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