Department of Medical Sciences Ministry of Public Health is the entity in Thailand that accredits labs with respect to the ISO
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standard. I think you could just print out the information at the site linked in my first comment above. Or if you think you need something more official you can ask the contact person mentioned at the same link.
Yes, great advice. Plus check to see what permission to stay date you receive while you are still in front of the Immigration Officer. It should be the same as the date on your re-entry permit. If not, it's easier to correct the mistake while you are still in front of the officer.
Yes, one would naturally assume they would be the same. Thai immigration is infamous for making half-thought-out changes to laws and this is a prime example of that.
The reason for the refusal has been explained in the Thai Visa immigration forum. The crux of the problem is that the applicant is trying to get a Non-O visa (note well, a visa, not an extension). He arrived in Thailand with visa-exempt entry, not on a Non-O. in Thailand. The applicant has ample documentation to support an extension of stay, but he is not trying to get an extension of stay, he is first trying to get a Non-O visa. The problem as explained in the other forum is that when the English-speaking embassies decided to get out of the income letter business and stop providing them for their citizens, Thai immigration came up with the monthly deposit scheme as a workaround. However, they did not go back and retrofit that workaround into the process of getting a Non-O visa in Thailand. The ONLY legitimate ways of getting a Non-O visa in Thailand are to have 800,000 baht in a Thai bank OR to have an income letter from your embassy (note the monthly deposit workaround is missing from the regulations).
His immigration office is balking at giving him a Non-O because technically as the law is written he doesn't qualify for a Non-O using the monthly deposit method because the monthly deposit method is not mentioned in the rules for getting a Non-O. If by some miracle he were able to get the Non-O issued, then with the evidence he already has he would have no problem getting a retirement extension based on the Non-O. But he doesn't have the Non-O and he can't get one using the monthly deposit method.
This would be a great time for the immigration officers in charge to use their discretionary powers to waive the requirement that it be a lump sum 800,000 or an income letter, and allow the applicant to get a Non-O visa in Thailand. Frankly, it will probably take an agent. Unfortunately.
Yes, if they insist on two (because maybe the COR needs to be filed with each license application) it would seem that one could be a copy. It's not like you live somewhere for your motorcycle license and somewhere else for your car license. But this is a Land Transport Office that doesn't accept a yellow house registration book as proof of where you live, which is sort of the reason why the yellow book exists. ;-)