Karyotype, GTG-banding - Blood
Alternate test name
Gene name / Alternate gene name
- All chromosomes
Genome Diagnostics - Cytogenetics
Method and equipment
3 day PHA-stimulated thymidine-synchronized culture; G-banding
Expected turn-around time
Routine - 4 weeks. Newborns or expedite cases - 5-9 working days.
Blood at room temperature in sodium heparin
Volume: 0-3 months 1-3 mL
3 months-12 years: 3-6 mL
12 years - adult: 6 mL
Storage and transportation
Maintain at room temperature. Do not refrigerate or freeze.
Collect in sodium heparin tube.
Background and clinical significance
Cytogenetic disorders are present in nearly 1% of live births. Indications for chromosome analysis include aneuploidy syndromes, endocrine disorders, query mosaicism, multiple miscarriages, and infertility.
Constitutional chromosome disorders, including aneuploidy, chromosome rearrangements, and mosaicism
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