Accurate, Affordable DNA Testing in Montana – Legal & At‑Home Options

You can test at GameDay DNA collection sites or use an at‑home cheek‑swab kit for private peace of mind. The Montana Department of Public Health and Human Services’ Child Support Enforcement Division (CSED) explains that genetic testing is available when you receive child support services and that test results are used to legally determine the father, as outlined on the state’s Paternity Establishment Information page. The CSED brochure “Paternity Information for Parents” adds that genetic testing is normally not available if paternity has already been established, such as when a voluntary acknowledgment or court order is in place.

Montana law allows paternity to be established either administratively through CSED or through a court action that can include paternity genetic testing. Under Montana Code § 40‑5‑233 on establishment of paternity—administrative hearing—compulsory paternity genetic testing, paternity genetic testing may be requested by the alleged father, the mother, or the child’s custodian, and if the department finds enough facts to show a reasonable probability of paternity or non‑paternity, it must issue subpoenas requiring the alleged father, mother, and child to submit to testing. Montana Code § 40‑5‑234 on paternity genetic tests—effect of test results states that if testing shows a 95 percent or higher statistical probability of paternity, the alleged father is presumed to be the natural father, and that presumption can be used as the basis for a support order, while exclusionary results conclusively resolve paternity in his favor.

Most paternity genetic tests in Montana use buccal‑swab (cheek‑swab) samples from the mother, child, and alleged father, though blood or other tissue can also be tested. CSED’s Paternity Information for Parents explains that a swab is rubbed on the inside of the cheek to collect cells, and that these samples are analyzed by an expert qualified in examining genetic markers appointed under § 40‑5‑234. The Montana Courts’ paternity information page notes that genetic testing can create a presumption of paternity and that CSED can help arrange testing when the identity of the father is uncertain, reinforcing that cheek‑swab DNA tests are the standard method used for legal paternity in the state.

For at‑home kits, use the sterile swabs in your kit, rub firmly along the inside of each cheek for the full time specified in the instructions, let the swabs air‑dry, and place them in the labeled envelopes before mailing them back to the lab. General DNA‑testing guidance used by Montana providers emphasizes avoiding food, drink, or smoking for at least 30 minutes before swabbing so the samples are clean and uncontaminated. Local medical services, such as Great Falls Medical Services’ paternity DNA testing page, describe cheek‑swab collection as a simple, painless way to obtain DNA for paternity purposes, while noting that results used as legal evidence must follow proper chain‑of‑custody procedures when collected.

GameDay DNA provides results through a secure online portal or encrypted email, with printed reports available for legal tests upon request. When testing is arranged by CSED, the Paternity Establishment Information page explains that genetic test results are used to legally determine the father and that, when a presumption of paternity is created, the department may enter the presumption in the support‑order registry and proceed to establish child support. The Montana Courts’ paternity forms and information add that once paternity is determined—either by acknowledgment, genetic testing, or court order—the court can issue orders addressing child support, custody, and parenting time, and copies of those orders serve as official documentation of the test outcome.

Yes—paternity genetic test results that meet Montana’s statutory requirements are routinely used as evidence in paternity and child‑support cases. Montana Code § 40‑5‑234 on paternity genetic tests provides that an affidavit documenting the chain of custody of any blood or tissue specimen is admissible to establish chain of custody, that exclusionary test results conclusively show a man is not the father, and that results showing a 95 percent or higher probability of paternity create a presumption that the man is the natural father. A Social Security legal opinion summarizing Montana paternity law notes that courts may consider blood‑test results, expert opinions on probability, and all other relevant evidence under Montana Code § 40‑6‑113 when determining the existence of a father‑child relationship, underscoring the legal weight of properly conducted genetic testing.

Under Montana Code § 40‑6‑107 on determination of father and child relationship, a paternity action may be brought by the child, the mother or her personal representative, the Department of Public Health and Human Services or its local affiliate, a person alleged or alleging to be the father, or the personal representative or a parent of the alleged father if he has died or is a minor. The Montana Courts’ paternity resource explains that paternity may also be acknowledged without court after a child is born and that, when the father’s identity is uncertain, CSED can help determine paternity through genetic testing and administrative procedures. A Social Security opinion on Montana paternity presumptions confirms that actions to determine the existence of the father‑child relationship can be filed in civil court and that evidence may include genetic tests, expert opinions, and other relevant proof.

Yes—Montana law allows actions to determine paternity even when the alleged father has died or cannot be tested directly. Montana Code § 40‑6‑107 on determination of father and child relationship expressly permits an action to be brought by the personal representative or a parent of the alleged father if the alleged father has died, meaning the court can consider available evidence, including genetic tests of relatives or stored samples, to decide paternity. The Social Security Program Operations Manual entry on Montana explains that evidence relating to paternity may include blood‑test results, expert probability opinions, and other relevant evidence under Montana Code § 40‑6‑113, and that tribal court determinations and enrollment records may also be used in some cases, illustrating how genetic and documentary evidence can establish paternity after death.