Good point SSSS I'm sure most of us mongers don't carry around our latest HIV tests, nor do I think the majority of guys have even been tested.
The other day I asked to see the health card of some SG girl I was doing. She looked really young, and I wanted to make sure she was of age. It turns out she was 22. Don't be afaird to ask the chicas for their health card if your concerned about their sexual health or age, as I guess it does provide at least a little protection knowing they were STD free at least a month ago.
All the sex providers in Tijuana are suppose to carry health cards, but I understand many do not carry them. I'm just like everybody else, 95% of the time I never ask about their 'CARD.'