Need help with labs

My daughter has suffered from round worms and been treated for a few months. She is still infected. I cannot get a positive lab result and desperately need the proof. I'm going through a divorce and my husband is saying I'm crazy and our daughter is fine. She is not fine and is still suffering. She has autism and her symptoms are very much related to her worm infection. Doctors are not willing to help treat her without a positive lab test. I physically gave a jar with worms in it to the pediatrician to be identified. She called back and said its not worms. Are there any labs that know what they're doing that can help?