Sibling DNA Test (Full or Half-Sibling Relationship Analysis)

Accurate genetic relationship testing – find out if you share one or both biological parents.

The Sibling DNA Test determines whether two individuals share one or both biological parents, helping to establish whether they are full siblings, half siblings, or unrelated.

This test compares multiple DNA locations (known as genetic markers or loci) to determine the amount of shared DNA, using advanced biostatistical analysis to calculate the likelihood of a biological relationship.

Because siblings inherit DNA from their parents, testing additional family members (such as the biological mother, father, or another sibling) significantly increases the accuracy of the result.

Key Features

• Price: R3 000 per person (min. 2 individuals)
• Purpose: Confirms full-sibling or half-sibling relationships
• Accuracy: 99.99% for confirmed biological relationships
• Turnaround time: 10–14 working days
• Collection options: At our Sandton offices or via a couriered home collection kit anywhere in South Africa
• Accreditation: Testing performed in an ISO/IEC 17025-accredited genetic laboratory, ensuring the highest international quality standards

How the Test Works

• DNA Collection: Cheek-swab samples are collected from both siblings.
• Laboratory Analysis: The lab analyses 24 or more genetic markers (loci) to measure shared DNA.
• Statistical Comparison: A complex algorithm calculates the probability of a biological relationship based on shared DNA patterns.
• Results: A clear, easy-to-understand report is emailed within 10–14 working days.

Adding Family Members for Greater Accuracy

Because this test evaluates DNA sharing between siblings, adding a biological parent or additional sibling helps pinpoint which DNA segments are inherited from each parent, improving accuracy and interpretability.

Example: Including the biological mother or another sibling allows scientists to distinguish which DNA segments came from each side of the family.

Why Choose Renewed Health

• Testing performed in an ISO/IEC 17025-accredited forensic genetics lab
• Confidential, reliable, and scientifically validated
• Optional home testing kit delivered discreetly nationwide
• Supported by trained genetics professionals who can explain your results

Legal vs Non-Legal Testing

This sibling test is for personal use and informational purposes.
If you require results for court, inheritance, or immigration, please contact Renewed Health to arrange a legal DNA test with verified collection and chain-of-custody documentation.

Need Guidance?

Our genetics team can help you decide which family members to include for the most conclusive result.
Contact us at info@renewedhealth.co.za or visit www.renewedhealthsa.com to order your kit today.