Chromosomal Karyotyping (Blood Sample)
This test examines the structure and number of chromosomes in your blood cells to check for any genetic abnormalities.
["Helps identify potential genetic conditions that may affect your health."]
Key facts at a glance
- LOINC
- 82252-8
- Short code
- Cons heterochrom analysis Bld/T Banding
- Synonyms
- Cons heterochrom analysis Bld/T Banding
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- banding
- CPT
- 86038
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What Is Chromosomal Karyotyping?
Chromosomal karyotyping involves analyzing the chromosomes in your blood cells under a microscope. Chromosomes are the structures that carry your genetic information. This test helps detect any changes, such as extra or missing chromosomes, or structural abnormalities like deletions or duplications that could influence your health.
How Is the Sample Collected?
A blood sample is drawn from a vein in your arm. The sample is then processed to isolate white blood cells, which contain chromosomes. These cells are grown in a lab to multiply before being examined under a microscope.
When Might This Test Be Needed?
Your healthcare provider may recommend chromosomal karyotyping if you have symptoms of genetic conditions, such as developmental delays, unexplained infertility, or recurrent miscarriages. It may also be used before pregnancy to assess risks or in cases of suspected chromosomal disorders.
What Are Common Findings?
Common findings include normal chromosome counts or the presence of conditions like Down syndrome (trisomy 21), Turner syndrome (monosomy X in females), or Klinefelter syndrome (extra X chromosome in males). Structural abnormalities, such as translocations or inversions, may also be identified.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Chromosomal karyotyping plays a critical role in diagnosing genetic disorders that can affect growth, development, and overall health. It helps guide treatment options and provides important information for family planning and genetic counseling.
Short name
Blood Chromosome Analysis
Frequently asked questions
Why might my doctor order this test if I’m pregnant?
How long does it take to get results from this test?
Can this test detect all genetic conditions?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy