IQ Test DLA

Hi,

I'm the father of an Autistic child (Diagnosed and with EHCP). He's currently on the Mid Rate Care Component for DLA. But I'm concerned I may be under claiming based on his circumstances. He's low functioning Autistic and attends a special school.

One of the criteria for the higher rate Care component of DLA is an IQ score of 55 or less. Although this is not essential, it is easier to prove "Severe impairment of intelligence" and when taken into consideration with other evidence from his special school, EHCP etc I think he probably qualifies for the higher rate care component.

Has anyone reading this managed to get an IQ test for a child like my son, and if so where? And what source is acceptable to the DWP?