From my experience, big company has panel clinic for potential employee to do free pre-employment medical checkup.

Since the company paid for your report, you will not know the result. I just did my med check in BP Healthcare for free. Just basic blood test, urine test, chest x-ray, eye sight, BMI.

After a few days, company called me that I passed the test and e-mail me the offer letter. EZ

For my case, it is confidential to the company and I really dont know what tests they did. They just took my blood samples.

If u r not doing any drugs, should be ok. Heard that some companies dont allow their employees to smoke so good luck.