CHROMOSOMAL ANALYSIS – MICROARRY

Chromosomal Analysis – Microarray is an advanced genetic diagnostic test used to identify chromosomal abnormalities and copy number variations (CNVs) across the entire genome. Chromosomal microarray analysis (CMA) provides high-resolution evaluation of genetic material and can detect gains or losses of chromosomal segments that may be associated with developmental disorders, intellectual disabilities, congenital anomalies, autism spectrum disorders, and various genetic syndromes.

Unlike conventional chromosome analysis, chromosomal microarray technology can identify submicroscopic genetic changes that may not be visible under a microscope. This makes it one of the most powerful tools for investigating unexplained developmental and genetic conditions.

Benefits of the Test

• Provides high-resolution genome-wide chromosomal analysis.
• Detects copy number variations and microdeletions.
• Identifies microduplications and chromosomal imbalances.
• Supports diagnosis of developmental disorders.
• Helps evaluate congenital abnormalities.
• Assists in genetic counseling and family planning.
• Provides valuable information for personalized patient care.
• Offers greater sensitivity than conventional karyotyping for many conditions.

Why Doctors Recommend This Test

Doctors recommend Chromosomal Analysis – Microarray for individuals with developmental delay, intellectual disability, autism spectrum disorders, congenital anomalies, unexplained genetic conditions, multiple birth defects, growth abnormalities, or suspected chromosomal syndromes. The test is also frequently used in prenatal and postnatal genetic evaluations.

Comprehensive chromosomal analysis helps identify underlying genetic causes and supports accurate diagnosis, prognosis, and medical management.

Preparation Before Test

• No fasting is generally required.
• A blood sample is typically collected for testing.
• Prenatal specimens such as amniotic fluid or chorionic villus samples may be used when indicated.
• Provide detailed medical and family history.
• Genetic counseling may be recommended before testing.
• Follow all sample collection instructions provided by healthcare professionals.

Normal Reporting Time

Most Chromosomal Analysis – Microarray reports at Focus Diagnostics are available within 2–3 hours for specimen processing and laboratory workflow initiation. Final genomic analysis, interpretation, and reporting generally require several working days due to the complexity of genetic data evaluation.

Who Should Take This Test?

This test may be recommended for:

• Children with developmental delay.
• Individuals with intellectual disability.
• Patients with autism spectrum disorders.
• People with congenital anomalies or birth defects.
• Individuals with unexplained growth abnormalities.
• Patients with suspected genetic syndromes.
• Families undergoing genetic evaluation.
• Patients requiring advanced chromosomal testing.

Detailed Information

Chromosomal abnormalities are among the most important causes of developmental disorders, congenital anomalies, intellectual disabilities, and various inherited conditions. While traditional chromosome analysis (karyotyping) can identify large chromosomal abnormalities, many clinically significant genetic changes are too small to be detected using conventional techniques.

Chromosomal microarray analysis (CMA) is a highly sophisticated genomic technology that evaluates the entire genome for copy number variations (CNVs), including microdeletions and microduplications. These small gains or losses of genetic material can disrupt normal development and contribute to a wide range of medical conditions.

The test uses thousands to millions of DNA probes distributed throughout the genome to compare a patient's genetic material with a reference standard. This allows highly sensitive detection of chromosomal imbalances that may be associated with developmental delay, intellectual disability, autism spectrum disorder, multiple congenital anomalies, epilepsy, growth disorders, and numerous genetic syndromes.

Chromosomal Analysis – Microarray has become a first-line genetic test for many pediatric and developmental conditions because of its superior diagnostic yield compared with conventional chromosome analysis. It can identify clinically relevant abnormalities in patients whose standard karyotype results are normal.

The test may also be used in prenatal settings when fetal structural abnormalities are identified on ultrasound or when there is concern regarding chromosomal abnormalities. In addition, CMA can play an important role in evaluating unexplained pregnancy loss and selected reproductive health conditions.

Results may identify pathogenic abnormalities, likely pathogenic variants, benign findings, or variants of uncertain significance. Because genetic findings can be complex, interpretation is typically performed by experienced molecular geneticists and may be accompanied by genetic counseling.

At Focus Diagnostics, Chromosomal Analysis – Microarray testing is performed using advanced genomic technologies, high-resolution microarray platforms, and stringent quality assurance standards to provide accurate, reliable, and clinically meaningful genetic diagnostic information.