Filiation and Estate Administration: Clarifying the Scope of DNA Evidence in Determining Heirship

The Supreme Court recently clarified an important point about DNA evidence in estate proceedings: a DNA test showing a person is not related to one parent does not automatically prove they are not the child of the other parent. In Calma v. Turla (G.R. No. 221684, July 30, 2018), the Court also reminded trial courts that DNA results must be formally offered as evidence before they can be used as a basis for removing a court-appointed administrator.

The case arose from a dispute over the estate of Mariano Turla, who died intestate in 2009. Marilu Turla filed a petition for letters of administration, claiming to be Mariano's legitimate daughter. Maria Calma opposed the petition, arguing that Marilu was not Mariano's child and that she, as Mariano's half-sister, was entitled to administer the estate.

The trial court granted Calma's motion for DNA testing to determine Marilu's paternity. However, the test was conducted using blood samples from Rufina de Castro's alleged siblings—not from Mariano. The results showed that Marilu was not maternally related to Rufina. Based on this result, the trial court removed Marilu as special administratrix.

The Court of Appeals reversed, and the Supreme Court affirmed the appellate court's ruling.

The Issue

The central question was whether the trial court committed grave abuse of discretion in removing Marilu as special administratrix based on DNA evidence showing she was not related to Mariano's wife, Rufina.

The Ruling

The Supreme Court ruled that the trial court acted with grave abuse of discretion. The Court made two key points.

First, the DNA test was ordered to prove Marilu's paternity—her relationship to Mariano. But the test was conducted with Rufina's relatives, not Mariano's. While the results showed Marilu was not related to Rufina, they did not prove she was not Mariano's daughter. This was especially significant because Mariano himself had signed Marilu's birth certificate and reported her birth.

Second, the DNA results were never formally offered as evidence under the Rules of Court. The Court noted that under the Rule on DNA Evidence, granting a DNA testing application does not automatically mean the results are admitted into evidence. The party seeking to use the results must still offer them properly. Because the trial court used the DNA results without this formal offer, Marilu was deprived of the opportunity to contest them.

The Court also noted that the selection and removal of special administrators is discretionary with the trial court, but this discretion must be exercised based on reason, equity, justice, and legal principles—not on improperly considered evidence.

Practical Takeaways

• A DNA test showing non-relationship to one parent does not disprove filiation to the other parent. Each parentage question must be tested separately.
• DNA results are not automatically admissible evidence. They must be formally offered in accordance with the Rules of Evidence and the Rule on DNA Evidence.
• Courts may remove special administrators at their discretion, but that discretion must be exercised judiciously and based on properly admitted evidence.
• In estate proceedings, the relevant question is the claimant's relationship to the decedent—not to the decedent's spouse.
• Parties seeking to use DNA evidence should ensure the testing is designed to answer the actual issue in the case.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.