Hearing that your child is FRAT positive can be an emotional moment for any parent. The good news is that a positive folate receptor antibody test does not diagnose autism. Instead, it suggests folate receptor autoantibodies (FRAA) may interfere with folate transport into the brain.
According to MedlinePlus, impaired folate transport has been linked to cerebral folate deficiency (CFD) and may contribute to neurodevelopmental symptoms in a subset of children.[1]
What Does a Positive FRAT Test Mean?
If your child has a positive FRAT test result, your doctor will interpret it together with developmental history, clinical symptoms, and other investigations. Understanding the FRAT positive meaning helps determine whether disrupted folate transport could play a role in autism folate deficiency.
A positive FRAT result alone does not confirm CFD or autism. It simply identifies a biological finding that may require further evaluation.
What Happens Next?
The recommended next steps for a positive FRAT test include consulting a developmental pediatrician, pediatric neurologist, or metabolic specialist. Depending on your child's overall clinical assessment, your doctor may recommend folinic acid treatment using leucovorin for autism.
Evidence available through PubMed Central suggests that folinic acid may improve communication and adaptive outcomes in a subset of FRAA-positive children when prescribed under appropriate medical supervision.[2]
Early evaluation allows clinicians to decide whether additional investigations or targeted interventions are appropriate, helping families make informed decisions based on the best available evidence.
Consult our specialists to review your child's FRAT results, understand the next steps, and receive a personalized care plan tailored to your child's needs.
FAQs
What happens after a positive FRAT test?
Our specialist will review the results with your child's medical history and symptoms before recommending further evaluation or treatment.
What does it mean if my child is FRAT positive?
It means folate receptor autoantibodies were detected. The test identifies a potential biological pathway but does not diagnose autism.
Can FRAT positive be treated?
The antibodies themselves are not removed, but their effects may be managed with folinic acid under medical supervision.
Does a positive FRAT mean my child has cerebral folate deficiency (CFD)?
No. A positive FRAT result indicates autoantibodies are present, but additional clinical assessment is needed to determine whether CFD is contributing to symptoms.
What's the treatment after a positive FRAT result?
When clinically appropriate, your doctor may prescribe folinic acid (leucovorin) while monitoring your child's response.
How long does it take to get FRAT test results?
Mr. Yoda delivers the FRAT IgG results in 7-10 days.
How common are folate receptor antibodies in children with autism?
Studies suggest these autoantibodies are found in a substantial proportion of children with autism, although prevalence varies across published research.
References
- Frye RE, Sequeira JM, Quadros EV, Rossignol DA. Cerebral folate receptor autoantibodies in autism spectrum disorder. Molecular Psychiatry.
- Frye RE, Slattery JC, Delhey L, et al. Folinic acid improves verbal communication in children with autism spectrum disorder and language impairment: A randomized double-blind placebo-controlled trial. Molecular Psychiatry.
- Frye RE, Rossignol DA. Cerebral folate deficiency, folate receptor alpha autoantibodies and leucovorin (folinic acid) treatment in autism spectrum disorders: A systematic review and meta-analysis. Journal of Personalized Medicine.