KARYOTYPING - PERIPHERAL BLOOD FOR SINGLE INDIVIDUAL

Karyotyping – Peripheral Blood for Single Individual is a specialized genetic test used to examine the number, size, and structure of chromosomes in a person's cells. The test helps identify chromosomal abnormalities that may be associated with genetic disorders, developmental delays, infertility, recurrent pregnancy loss, congenital abnormalities, and various medical conditions.

Humans normally have 46 chromosomes arranged in 23 pairs, including 22 pairs of autosomes and one pair of sex chromosomes (XX or XY). Any extra chromosome, missing chromosome, or structural rearrangement can affect growth, development, reproduction, and overall health.

This test is performed using a peripheral blood sample, from which white blood cells are cultured in a specialized cytogenetics laboratory. The chromosomes are then stained, examined under a microscope, and arranged into a karyotype, allowing experts to detect numerical and structural chromosomal abnormalities.

Karyotyping remains one of the most important diagnostic tools in clinical genetics and is widely used for evaluating suspected chromosomal disorders.

Benefits of the Test

• Detects chromosomal abnormalities
• Helps diagnose genetic syndromes
• Assists in infertility investigations
• Supports evaluation of developmental delays
• Helps identify congenital chromosomal disorders
• Provides valuable information for genetic counseling

Why Doctors Recommend This Test

Doctors may recommend Peripheral Blood Karyotyping for:

• Suspected chromosomal disorders
• Developmental delay or intellectual disability
• Congenital abnormalities
• Delayed puberty
• Infertility evaluation
• Recurrent pregnancy loss investigations
• Ambiguous genitalia assessment
• Family history of chromosomal abnormalities
• Genetic counseling and risk assessment

The test helps identify chromosome-related conditions and supports accurate diagnosis and treatment planning.

Preparation Before Test

The test requires a routine blood sample.

• No fasting is required
• No special preparation is generally necessary
• Inform your doctor about previous genetic testing
• Provide relevant personal and family medical history

The procedure is simple, safe, and involves standard venous blood collection.

Normal Reporting Time

Results are usually available within 2 to 4 weeks, depending on cell culture growth and laboratory analysis requirements.

Who Should Take This Test?

• Individuals with suspected genetic disorders
• Patients with developmental delays
• Individuals with congenital abnormalities
• Men and women undergoing infertility evaluation
• Patients referred for genetic counseling
• Individuals with a family history of chromosomal disorders

Peripheral Blood Karyotyping provides essential information about chromosomal health and helps guide diagnosis, management, and future healthcare decisions.

Clinical Significance

The test may help diagnose:

• Down Syndrome (Trisomy 21)
• Turner Syndrome
• Klinefelter Syndrome
• Edwards Syndrome (Trisomy 18)
• Patau Syndrome (Trisomy 13)
• Balanced translocations
• Robertsonian translocations
• Chromosomal inversions
• Sex chromosome abnormalities
• Mosaicism
• Structural chromosomal rearrangements

The results assist geneticists and healthcare providers in understanding the underlying cause of symptoms and determining appropriate medical management.