Genetic profiling test

This is NOT a gender selection test. Gender selection is against the law in the UK. We do not offer service of any kind that is associated with gender selection.

Karyotyping test

Genetic profiling by karyotyping is a test to examine chromosomes in a sample of cells. It can also be called a chromosome analysis. This test can help identify genetic problems from chromosomal abnormalities that are the cause of a disorder or disease.

How is it done?

A sperm, drawn with Chinese calligraphy, TCM Healthcare — London fertility clinic

The karyotype test processes blood cells, then photographs them. A karyotope describes an organism’s chromosome count and what they look like under a light microscope. This is to see if there are any chromosomal abnormalities, such as missing or extra chromosomes, or if there are any structural changes in the chromosomes that could prevent pregnancy or cause miscarriages.

What can it detect?

The karyotype test is a diagnostic test wherein all chromosomes are compared to detect both balanced and unbalanced rearrangements. It is used for adult blood referrals such as recurrent miscarriage or infertility and prenatally to diagnose chromosome conditions within the fetus for example the confirmation of trisomy 21 - Down syndrome within Chorionic villus or amniocentesis samples.  

The test informs on all chromosome pairs not just T21, T13 or T18 it also provides information on recurrence risk for subsequent pregnancies. It is also use to diagnose chromosome cause of miscarriage samples. Chorionic villus sampling typically occurs at around 13 weeks gestation and amniocentesis at approx. 18-20 weeks, CVS therefore has the advantage of earlier diagnosis.

What are the risks?

These procedures are invasive and carry a small risk of miscarriage.

In addition, there is a very small risk less than 1% of mosaicism involving the placental in which case a follow up amniocentesis may be requested to clarify the fetal karyotype.

Who would be suitable for this test?

  • You're planning to have children or are pregnant
  • You have a family history of a chromosomal disorder and want to know your risk for developing the disorder.
  • You and/or your child have symptoms of a genetic disorder.



Includes a report, follow-up phone call to explain the result and to talk about potential treatments.

How long do results take?

2–3 working weeks

When can I do the test?

  • Monday to Friday, 7.00am–6.30pm
  • Saturday, 7.00am–12.30pm

Our tests

We will explain the results to you and explore your options if there are issues. As a reputable laboratory carries out our tests, the results are accepted by all doctors and clinics in the world. Most results are available between 1 and 3 days.

Have a look at our comprehensive set of pathology tests below.

We’re also happy to offer advice on which tests you may want to take, and help interpret any results you already have.

Book a test

Call us on: 020 7096 0283

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While we are happy to explain your test results to you, we always advise consulting your GP and having a proper medical consultation about your result. This is because these tests are Western medical tests and are best explained by Western medical doctors. We do not accept any liability regarding interpretation of test results should you wish us help explaining them.

If you have booked a test and decide to change the time or date, we are more than happy to help you change it to one that is convenient to you at no extra charge. However, cancellation will carry a small administrative fee of £30, before refund.