Frequently Asked Questions

No — we're a cash-pay practice. This lets us offer longer visits, personalized care, and a holistic approach insurance typically won't cover. HSA/FSA is accepted, and you can often use insurance for labs and prescriptions as an out-of-network provider.

Insurance may cover the cost of some prescription medications such as leucovorin. However, we do not contract with insurance companies, so please check with your insurance provider if you have questions. Dr. April can also help guide you through affordable cash options for medications.

Our new patient intake is $149 (introductory, limited time; regular $199). Follow-up visits and specialty evaluations (leucovorin, LDN, lab review) are billed separately and transparently. See the Services section of the home page for current pricing.

Yes — self-guided testing and supplement access through Rupa Health and Fullscript is typically less than half the cost of a traditional functional medicine or naturopathic office visit, because you're only paying for the lab or product, not a consultation. Keep in mind: interpretation and recommendations are not included in self-guided.

Use the Book button anywhere on the site, or go directly to our scheduling page on Optimantra. New patient intake is 30 minutes.

Dr. Lam is licensed for telehealth in Arizona, Colorado, Connecticut, Florida, Idaho, New Mexico, Oregon, Utah, Vermont, and Washington. If you don't see your state, join the waitlist — we're actively expanding.

Yes. As with any medical visit, your child must be present and physically located in one of our licensed states at the time of the telehealth appointment.

We work with children and young adults with autism and related neurodevelopmental concerns. If you're unsure whether your child is a fit, email hello@functionalautism.com.

Not at all. We complement your child's existing medical team. Keep your pediatrician and specialists — we help bridge gaps and explore functional medicine options beyond the standard model.

Leucovorin is an activated form of folate (a B vitamin) that bypasses the faulty MTHFR enzyme and can cross the blood-brain barrier even when folate receptor autoantibodies (FRAA) block folate transport. In peer-reviewed pediatric ASD trials, leucovorin has been associated with improvements in verbal communication, particularly in FRAA-positive children. Use in autism is off-label.

Testing isn't required to start, but FRAT (folate receptor antibody test), MTHFR, homocysteine, and folate/B12 labs can help personalize treatment and identify children most likely to respond.

Most families begin to notice changes — especially in verbal communication and receptive language — over the first 8 to 12 weeks of consistent dosing. Response varies by child, dose, and underlying biology.

Leucovorin is FDA-approved for other indications. Its use in autism is currently off-label and based on peer-reviewed pediatric studies. The FDA began a label update process for cerebral folate deficiency in September 2025.

LDN is naltrexone prescribed at a fraction of its standard dose. It's used off-label for immune modulation and neuroinflammation. Dr. Lam evaluates whether LDN may be appropriate as part of a broader functional medicine plan.

Depending on your child's presentation, common labs include GI-MAP (gut microbiome), Organic Acids Test (OAT), micronutrient panels, heavy metals, mycotoxins, MTHFR genetic testing, and FRAT (folate receptor antibody test).

Yes. At your follow-up visit we build an individualized plan for supplements and nutraceuticals based on your child's labs, history, and goals. Professional-grade products are available through our Fullscript dispensary at a patient discount.

Self-guided gives you access to functional medicine labs (via Rupa Health) and professional-grade supplements (via Fullscript) without booking an appointment. It does not include a consultation, result interpretation, or clinical recommendations. 1:1 visits include medical evaluation, individualized plans, prescriptions where appropriate, and follow-up.

No. Parents may use results to access supplements based on testing, or share them with their own provider. For a clinical review with Dr. April, book a 1:1 visit if you reside in one of our licensed states.

Yes — New York, New Jersey, and Rhode Island have unique state laws that restrict which labs and supplements are available through self-guided ordering.

Yes. Rupa Health offers 3-month payment plans on most tests, making functional medicine lab work more accessible for families.