I think I'm on the mend. Wanted to say the lab I went to was Labortorio Clinico Puerto Plata in Sosua across from Playero. One person there spoke English, very nice, very clean, took me promptly. Had I gone to a doctor and had a Rx it would have been covered by insurance. I didn't so it was 1120 pesos ($25 approx). The results would be one test the same day, the other tests on Monday. They have the available for online results giving me a user name and password, and the results were to have been posted in an hour. Well it was Dominican time but it was posted eventually. So I can check on Monday to see the other results.
If I want any explanation or more details, I can go back to the lab.