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Updated: Jun 19, 2026

FISH for Pre-implantation Genetic Diagnosis
Published on: February 23, 2011
[Application of fluorescence in situ hybridization in prenatal diagnosis of complex chromosomal abnormalities]
Yan-yan Shen1, Jian Li, Hui Kong
1Xiamen Maternity and Child Health Care Hospital, Xiamen, Fujian, 361003, PR China.
Objective:
To investigate the application of fluorescence in situ hybridization (FISH) technique in prenatal diagnosis of complex chromosomal abnormalities.
Methods:
Eleven prenatal diagnosis cases (8 from amniocentesis and 3 from cord blood) with complex chromosomal abnormalities detected by routine G-banding, were further analyzed by FISH.
Results:
The FISH technique confirmed the results of balanced chromosome rearrangements detected by G-banding, and clarified the structure of the derivative chromosomes in the 3 amniocentesis samples and the origin of the mark chromosomes in the 2 cord blood samples.
Conclusion:
FISH can be used to diagnose the complex chromosomal abnormalities accurately in prenatal diagnosis, and can provide very useful genetic information for clinical diagnosis and treatment.
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