SRI Testing Labs, Do They Need to be Certified in some way?

For users who are not using a roofing material with a known SRI, or for manufacturers who want to add SRI data to their product data sheets, does the lab they send their samples to need to be certified in some way by the cool roof rating council or some other third party? Does the project manager need to provide any specific documentation from the lab to prove they are providing SRI data that was collected following the correct ASTM methods? If not, what if any, is the benefit of a manufacturer working with a CRRC accredited testing lab to get the SRI data?