Chromosomal Analysis / Karyotyping from Blood

Specimen Required

10cc Sodium Heparin Vial (Three Vials)

Fasting Required

Purpose of the Test

Chromosomal analysis or karyotyping from blood is done to detect chromosomal abnormalities. Chromosomal abnormalities can cause various genetic disorders and birth defects. The test is also used to diagnose some types of cancer and to evaluate the effectiveness of cancer treatments.

When this test is required

The test is typically ordered by a doctor if a patient has symptoms of a genetic disorder, a family history of a genetic disorder, or if there is a suspicion of chromosomal abnormalities during pregnancy. The test may also be ordered if a patient has been diagnosed with cancer.

What the Test Detects

The test involves examining the number, size, and shape of chromosomes in a sample of blood cells. The cells are stained to make the chromosomes visible and photographed under a microscope. The images are analyzed to identify any abnormalities.

Preparation for the Test

No special preparation is needed for the test.

Sample Requirements

A blood sample is required for this test. The blood sample is usually taken from a vein in the arm.

Additional Notes

Chromosomal analysis can take several weeks to complete, and the results may not be available immediately. In some cases, further testing may be needed to confirm the diagnosis. The test can also be done on other types of cells, such as amniotic fluid or bone marrow, depending on the condition being evaluated.

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