Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the treatments for tetrahydrobiopterin deficiency ?
    ### Response:
    These resources address the diagnosis or management of tetrahydrobiopterin deficiency:  - Baby's First Test: Biopterin Defect in Cofactor Biosynthesis  - Baby's First Test: Biopterin Defect in Cofactor Regeneration  - Genetic Testing Registry: 6-pyruvoyl-te
    