Genetic Health

Genetic testing based on DNA profiles to determine accurate and confidential results.

Learning about your genetic health is important as it can help you establish information about your health and genetics, assess your inherited health risks and take control of your health. Genetic testing – or DNA testing – involves testing your body’s DNA molecules directly to detect genetic disorders or genes. DNA testing is the most scientifically accurate and convenient technique for determining various relationships, including paternity or family screening, ancestry screening, carrier screening, genealogical screening and identity testing.

What is a DNA test exactly?

Deoxyribonucleic acid (DNA) is a molecule composed of four individual bases that is contained within a compartment called the nucleus and which is present in all our cells. Each molecule consists of two strands, each containing the four individual bases. This makes each person’s DNA unique, and family relationships can be determined by similarities in these strands.

A DNA test compares DNA from two or more different people to determine whether a family relationship exists or not. For example, a father might want to perform a DNA test (paternity test) to determine whether his alleged child really is his biological child.

How DNA tests work

Every persons’ body cells contain DNA, which enables a DNA test sample to be collected relatively simply by taking a swab of the skin cells from the inside of the cheek.

Two swabs per subject being tested will be taken – one for each cheek – and the purified DNA from these cell samples is then compared with one another in a laboratory. A DNA analysis machine then determines the variations on different chromosomes and produces the results like a barcode. Each test subject’s barcode is then placed next to each other to compare the biological relationship between them.

If a true biological relationship exists between the test subjects, 50% or more of the bands will match. However, if there is no biological relationship, the barcodes will show a less than 50% match. TestDiagnostics offer results of up to 100% conclusive for exclusion – the alleged father is not the biological father of the child – and up to 99.9% for inclusion – the alleged father is the biological father of the child.

What genetic health tests are available from

  1. Paternity test

    A Paternity test determines the paternal link between a man and a child. It is not required for the mother to be tested during a paternity test, but this option is available. Paternity test results are available from a CLIA-accredited lab within one week.

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  2. Maternity test

    A Maternity tests determines the maternal link between a woman and a child. Results are available within one week from a CLIA-accredited lab and are 100% conclusive for exclusion and 99.9% conclusive for inclusion.

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  3. Brother/Sister test

    A Siblingship test determines the relationship between two people, a brother and sister, and whether they share both parents (full siblings) or only one parent (half siblings). This relationship can be determined to 15% conclusive for exclusion and 90% for inclusion.

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  4. Aunt/Uncle test

    An Aunt/Uncle or Avuncular DNA test can be used to determine the genes from either side (mother or father) of the family, where the parents are not available. This test is performed by testing the DNA of an aunt, uncle or grandparent at an accredited laboratory.

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  5. Twin Zygosity test

    A Twin Zygosity test determines the relationship between alleged twins, whether they are identical twins, fraternal twins or siblings. Results are available within one week from a CLIA-accredited laboratory.

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  6. Missing Parent test

    A Missing Parent test determines the paternity or maternity of a child where the parents are missing or deceased, by testing the child’s paternal or maternal grandparents. Results are processed by an accredited laboratory within one week of receipt.

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  7. Male Lineage test

    An Y-STR Male Lineage test can determine the relationship between two or more males; for example a father and son, or a grandfather and grandchild. Results will be made available through an accredited laboratory within one week of sample receipt.

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  8. Female Lineage test

    An X-SV Female Lineage test can determine the relationship between two or more females; for example a mother and daughter, or an aunt and niece who are related by their maternal lineage. Results are available within ten working days.

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  9. Identification Profiling test

    A DNA Identification Profiling test has several uses and benefits, allowing a single individual to receive a copy of their unique DNA fingerprint for future reference. Results are processed in a certified laboratory.

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  10. Disease Predisposition Test

    The Disease Predisposition test helps determine your genetic risk for more than 25 adverse health conditions which may exist in your bloodline so you can plan to reduce the lifestyle effects they may cause. Get results in just four weeks from a CLIA-accredited laboratory.

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  11. Ancestry test

    An Ancestry test allows you to determine your GeoGenetic heritage and ancestral roots throughout the world. Your results are provided by an accredited lab in the form of a large colour-code map detailing your ancestral roots.

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