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Sankara Nethralaya
Sankara Nethralaya
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Department of Genetics and Molecular Biology

Chromosomal study:

Chromosomal Study requires peripheral blood from which lymphocytes are extracted and cultured. Chromosomes in the cultured lymphocytes are studied either in interphase/ metaphase/ prometaphase stage. The metaphase chromosomes are preferred for analyzing the numerical/structural chromosomal abnormalities.

Cytogenetic facility
Cytogenetic facility
We offer only postnatal analysis which include conditions like Down syndrome, Turner syndrome, Klinefelter syndrome, Wagner's syndrome, Microphthalmos, Anaphthalmos, Retinoblastoma, Aniridia, Axenfeld-rieger syndrome, Peters anomaly, Coloboma, Ptosis, Cri du chat syndrome etc.
Kumaramanickavel G, Mahboobu Subhani MSL, Rathnasabapathy V, Ramachandran MS (1987). A pilot study on the use of chromosomal analysis in the diagnosis of malignant effusions. South Indian Surgical Clinics; 1: 253-256.50
Joseph B, Paul PG, Elamparithi A, Roy J, Vidhya A, Shanmugam MP, Kumaramanickavel G. Karyotyping in retinoblastoma—a statistical approach. Asian Pac J Cancer Prev. 2005 Oct-Dec; 6(4):468-71. PMID: 16435993 [PubMed – indexed for MEDLINE]
List of Cytogenetic analysis offered by our department:
Name of the test Code No. Condition for which the test is done Specimen
Chromosomal Study (PBLC METHOD)


Chromosomal Abnnormalities viz., Down syndrome and other developmental anomalies like Microphtalmos, Anophthalmos, Coloboma, Aniridia etc 2 years
Cytogenetic Analysis for Retinoblastoma L721 Retinoblastoma