TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
Learn/Ask a Lawyer/Family/Can CAS Make Me Take a…
Family

Can CAS Make Me Take a DNA Test to Prove I'm Related to a Child in Ontario?

TSL Written by the Treadstone Law Team· Updated November 6, 2026

Whether you can be made to take a DNA test depends on who is asking and under what authority, so speak to a lawyer before you agree to or refuse one. The child protection rules themselves focus on the child's relationships and on whether the home is safe, not only on blood ties.

A relative means the child's grandparent, great-uncle, great-aunt, uncle or aunt, including through a spousal relationship or adoption. Someone who is not a relative can still qualify as a member of the child's community, for example a person who has a beneficial and meaningful relationship with the child or a family member.

Before a planned placement with a relative or community member, the society must check that the caregiver can provide a safe home. That includes interviewing the caregiver, meeting the child privately, assessing the home and reviewing records. A grandparent or other non-parent can also apply to the court for a parenting order about decision-making responsibility, with a sworn affidavit setting out the plan for the child's care. If your link to the child is doubted, gather whatever shows your relationship and ask a lawyer what proof is likely to matter in your case.

Key takeaways

  • A 'relative' means the child's grandparent, great-uncle, great-aunt, uncle or aunt, including through a spousal relationship or adoption.
  • A non-relative, such as a family friend with a beneficial and meaningful relationship with the child, can also qualify for placement.
  • Before a planned kin placement, the society must check that the caregiver can provide a safe home, including interviewing the caregiver and assessing the home.
  • Whether a DNA test can be required in your case depends on who is asking and under what authority, so get legal advice first.
This is general information, not legal advice. It doesn’t create a lawyer–client relationship, and the rules can change. For advice on your situation, a Treadstone family lawyer can help.

Go deeper

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

Still have questions?

Search our answers, or send yours to a Treadstone lawyer — we answer in plain language.

All answersStart a File →