Lab work for Mexico?

I'm sure you can find some Dr. willing to write you a prescription for lab work.
The fact that your primary care doctor did not want to get involved it's a telling sign.
In the United States most young healthy people don't get lab work before elective cosmetic surgery since they're not really indicated unless someone has underlying disease.
The change of ordering less lab tests has evolved slowly over the United States and is based on science.
Other countries and other doctors have different standards where they want lots of information.
Most of it is not relevant to having cosmetic surgery.
For older people or people with significant medical problems medical work up including lab tests can be incredibly important.
People with underlying medical conditions or older people should probably not travel to Third World countries for cosmetic surgery.
Dr. Campos can most likely have a lab test done when you arrive in Mexico.
Perhaps flying in a few days before your procedure would be prudent so you can also have an examination.
Considering you live in a country that most people consider having the most advanced medical care in the world I would take advantage of that.
Most likely you'll get the least amount of cooperation from local plastic surgeons in regards to getting your blood tests.
You could try calling local urgent cares or alternative medical providers.
With enough phone calls you'll find someone willing to order the tests for you.
I doubt you'll get a doctor from real self to do it though.
Best of luck with your upcoming travel and procedures.
Best,
Mats Hagstrom M.D.

That is just one of you problems with going to another country. Other concerns: 1 .who is going to make sure you are cleared for surgery.
2. Where are you going to stay to recover
3. How are going to get down there and back
4. Who is going to take care of you if you have complications
5. No leg to stand on if you have medico-legal issues
Is it really worth it when you have excellent surgeons in your neighborhood. I would recommend that you have surgery with a board certified surgeon close to your home.