| 摘要 |
A method for diagnosing a pervasive developmental disorder, such as autism, comprising obtaining a sample of cerebrospinal fluid from a subject; obtaining a sample of serum from a subject; testing the cerebrospinal fluid of the subject for a concentration of TNF-alpha; testing the serum of the subject for a concentration of TNF-alpha; and positively diagnosing a pervasive developmental disorder when the concentration ratio of TNF-alpha in the cerebrospinal fluid of the subject to TNF-alpha in the serum of the subject exceeds approximately 2:1 over normal control concentrations.
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