Measurement of vanilloïd Compounds in Urin of Autistic vs Control Patients, as Potential Biomarkers

Inclusion criteria : For cases : * Male children aged 2 years to less than 15 years inclusive years at time of sample collection * Children with a diagnosis of autism (ICD-10 F84.0) after assessment by a child psychiatrist. For healthy chlidren: * Children aged 2 years to less than 15 years old performing an ECBU at the CHRU of Nancy as part of their care. * Patient whose ECBU is negative with respect to cytobacteriology (absence of urinary infection). * Child can be matched to a CAS Exclusion criteria For cases: * Children in whom one of the following pathologies is found during the anamnesis or in the clinical record : (i) renal insufficiency; (ii) urinary tract infection at the time of sampling and/or metabolic disease * Children on antibiotic treatment at the time of collection For healthy chlidren : * children whose urine culture come from one of the following departments: Pediatric Nephrology (potential risk of renal failure) or Pediatric Neurology (potential risk of neurological disorder). * with a diagnosis of autism * with a metabolic disease * children undergoing antibiotic treatment at the time of collectio