GTLDNA AU
  • Home
  • DNA Tests
    • Paternity Tests
      • Home Paternity Test
      • Legal Paternity Test
      • Immigration DNA Test
      • Non-Invasive Prenatal Paternity Test
      • Discreet Test
    • Relationship Tests
      • Siblings DNA Test
      • Aunt & Uncle Test
      • Grandparentage Test
      • Twins DNA Test
      • Y Chromosome Test
      • Maternity Test
    • Prenatal Tests
      • Non-Invasive Prenatal Paternity Test
      • ‘Prenatal Peace’ – Non-Invasive Prenatal Genetic Screening Test
      • Baby Gender Testing
      • Prenatal Package
    • Ancestry Tests
      • Ancestral Origins Test
    • Health & Wellbeing Tests
      • Children’s DNA Discovery
      • NutriFit
      • Nutri Plan
      • NutriFit Premium (NutriSport)
      • Autism Panel
      • Lactose Intolerance DNA Test
      • Celiac Disease Genetic Testing
      • Genetic Predisposition Test
    • Drug Tests
      • Hair Drug Testing
    • Clinical Tests
      • Inherited Diseases Panel
      • Newborn Genetic Test with NOVA™
      • Baby Gender Testing
      • Celiac Disease Genetic Testing
      • Genetic Screening for Cystic Fibrosis
      • Cancer Panel Genetic Predisposition Test
      • New Clinical Allergy Testing
      • Pharmacogenomics PGx
    • Oncology
      • Inherited Cancer Panel
      • Targeted Sequencing Panel 22 – TSP22™
      • Targeted Sequencing Panel 19- TSP19™
      • Targeted Sequencing Panel 50 – TSP50™
      • BRCA1 & BRCA2
      • Tumour Mutational Burden
      • Sarcoma Panel
      • Circulating Cell-free tumour DNA (cfDNA)
      • Oncomine Comprehensive Targeted Sequencing of DNA and RNA in Cancer
      • Whole Exome Sequencing in Cancer
    • Other Tests
      • Infidelity DNA Testing
      • Semen Detection Testing
      • DNA Profiles
  • About Us
    • Accreditation
    • DNA Testing Laboratory
    • Job Opportunities
    • Media & Press
      • Company News
    • Award in Customer Service
    • Charity Work
  • Testimonials
  • Blog
  • Resources
    • Kits in Different Locations
    • Frequently Asked Questions
    • Payment Options
    • Collecting Samples
    • Create Your Own DNA Kit
    • Understanding Results
    • Multimedia
    • Knowledge Base
  • Contact Us
    • Worldwide Offices
  • Order a DNA Test!
Request a Callback
Worldwide Offices
 1300 482 165

Can you Carry out a DNA test if Father is Absent ?

DNA paternity testing can prove paternity to within 99.99% accuracy, more than acceptable as legal proof of fatherhood. What happens, however, if the suspected father is not available to provide a sample, or refuses to do so?

There is no better method of proving that someone is the biological father of his child than DNA testing. The DNA of the father and child can be compared to within 99.99% certainty, more than enough for courts legally to pronounce the biological father of a child – or even to legally deny it.

Many men are reluctant to take part in such tests for their own reasons, and some may be deceased or even unable to be contacted for one reason or another. In such cases there are ways of collecting samples and having the DNA test carried out.

Testing Blood Relatives to Prove Paternity

A child’s paternity can be proved through a technique known as DNA relationship testing, which involves testing relatives of the alleged father. For this to be relevant there must be a proven relationship from the person tested to the father.

Grandparents, uncles, aunts, and even cousins, nieces and nephews of the child can be used as subjects. The match might not be perfect but there is only so far that such test can go, although for any but legal reasons, such matches are more or less conclusive.

What is conclusive is a DNA match for a male child using the Y chromosome. The chromosomes of a human being can be one of two sex types, known as X and Y. Human DNA consists 46 chromosomes, two of which determine the sex. During reproduction, the human egg contains 23 chromosomes, half of what is needed to form an embryo. One of these 23 is the sex chromosome, and in the case of the female egg this is a Y chromosome.

The sperm contains either an X or a Y chromosome, and when the sperm and egg combine to form the full complement of 46, the two sex chromosomes are either X-X (female) or X-Y (male).

A relatively new DNA analytical procedure is able to test repeating sections of the Y chromosome to prove paternity down the male line. Known as the Y-Short Term Repeats test (Y-STR), this can be used on blood male relatives, such as the child’s grandfather on the male side, brother, cousins, nephews or uncles, all on the male side.

Because the Y chromosome does not change down the generations, it can be used to prove paternity or otherwise, even though the actual father is not available for testing. This form of DNA paternity testing might be required by the courts, in which case it would be organized by your attorney, but you can also contact the company that will be doing the test, and ask their advice on what is necessary and who should provide the sample.

DNA Tests

  • Paternity Tests
  • Relationship Tests
  • Prenatal Tests
  • Ancestry Tests
  • Clinical & Molecular Tests
  • Other Tests
  • Health & Wellbeing Tests
  • Oncology Tests
Customer Service Award Winner

Twitter

  • Family history of the disease can contribute you to develop breast cancer. Determine your risk to breast cancer by… twitter.com/i/web/status/1…
    1 day ago
→ Follow me

Need Assistance?

Request a Callback
  • Home
  • DNA Tests
    • Paternity Tests
      • Home Paternity Test
      • Legal Paternity Test
      • Immigration DNA Test
      • Non-Invasive Prenatal Paternity Test
      • Discreet Test
    • Relationship Tests
      • Siblings DNA Test
      • Aunt & Uncle Test
      • Grandparentage Test
      • Twins DNA Test
      • Y Chromosome Test
      • Maternity Test
    • Prenatal Tests
      • Non-Invasive Prenatal Paternity Test
      • ‘Prenatal Peace’ – Non-Invasive Prenatal Genetic Screening Test
      • Baby Gender Testing
      • Prenatal Package
    • Ancestry Tests
      • Ancestral Origins Test
    • Health & Wellbeing Tests
      • Children’s DNA Discovery
      • NutriFit
      • Nutri Plan
      • NutriFit Premium (NutriSport)
      • Autism Panel
      • Lactose Intolerance DNA Test
      • Celiac Disease Genetic Testing
      • Genetic Predisposition Test
    • Drug Tests
      • Hair Drug Testing
    • Clinical Tests
      • Inherited Diseases Panel
      • Newborn Genetic Test with NOVA™
      • Baby Gender Testing
      • Celiac Disease Genetic Testing
      • Genetic Screening for Cystic Fibrosis
      • Cancer Panel Genetic Predisposition Test
      • New Clinical Allergy Testing
      • Pharmacogenomics PGx
    • Oncology
      • Inherited Cancer Panel
      • Targeted Sequencing Panel 22 – TSP22™
      • Targeted Sequencing Panel 19- TSP19™
      • Targeted Sequencing Panel 50 – TSP50™
      • BRCA1 & BRCA2
      • Tumour Mutational Burden
      • Sarcoma Panel
      • Circulating Cell-free tumour DNA (cfDNA)
      • Oncomine Comprehensive Targeted Sequencing of DNA and RNA in Cancer
      • Whole Exome Sequencing in Cancer
    • Other Tests
      • Infidelity DNA Testing
      • Semen Detection Testing
      • DNA Profiles
  • About Us
    • Accreditation
    • DNA Testing Laboratory
    • Job Opportunities
    • Media & Press
      • Company News
    • Award in Customer Service
    • Charity Work
  • Testimonials
  • Blog
  • Resources
    • Kits in Different Locations
    • Frequently Asked Questions
    • Payment Options
    • Collecting Samples
    • Create Your Own DNA Kit
    • Understanding Results
    • Multimedia
    • Knowledge Base
  • Contact Us
    • Worldwide Offices
  • Order a DNA Test!

Terms and Conditions
Privacy Policy
Cookie Policy

Business Opportunities
Affiliate Programme
Site Map

GTLDNA,
U3/5 Sesame Ct
Slacks Creek, QLD, 4127

Tel: +61 1300 482 165
Email: info@gtldna.com.au

© GTLDNA 2019
Theme by Headway Information Services
en English
zh-CN Chinese (Simplified)en Englishja Japaneseth Thaivi Vietnamese

COVID-19 STATEMENT

We are monitoring the ongoing Coronavirus (COVID-19) pandemic closely and are complying with the Government’s guidance for the workplace.

Our offices are still open, and we are processing samples and fulfilling orders. To keep you safe we are washing and sanitising our hands before packing orders and they are then placed in our daily mailing services. Unfortunately we cannot allow drop-ins at our office until further notice and all sample collection appointments have been postponed.

The laboratories are still open, are adhering to local guidelines and are processing samples as usual. If delays due to social distancing measures are likely to affect your results due date, then we will inform you immediately.

We are experiencing some delays with all postal and courier deliveries. If you have posted samples back to us but have not received notification that they have been received please track them and check your junk or spam folder before contacting us to request an update.

Please quote your case reference number when contacting us to enable us to respond more quickly.

All results are still being issued on time and you will be contacted if we anticipate any delay with your case.