Today I ordered a home kit for self-blood-typing from North American Pharmacal (1-877-ABO-TYPE or right4yourtype.com), taking advantage of the Free Shipping special. At $9.95 it's a great buy!

This is far from the first time I'm mid-wifing someone's initiation into blood type medicine; this one is for a friend, long familiar with my approach, but other times it's been on behalf of friends, yes, and clients. I've even stabbed their fingers for them if they were afraid to do it themselves. Apparently many people can not bear to see blood on their fingers; they might even feel faint if they do.

For my part, I stabbed my own finger in seventh grade Science, back in the 1960s. It was our first "lab". I discovered my B-ness then. When I was in college, as a preMed student my first job was at a hospital blood bank. It was my responsibility to screen potential donors - take their histories and vital signs, blood samples, and perform the hematocrits. My supervisor, a medical student, wanted to train me to draw the pint, but I was at that point reluctant. Instead I monitored post-donation status, restored fluids and nutrition, and sent the donor on his/her way.

As for modern self-typing kits, the new lancets, in their little casements, are very user-friendly. Somehow not seeing the actual weapon renders its use more benign. And within - oh - ten minutes of opening the package, you know your blood type. At a doctor's office, the ABO test can add seventy or more dollars to your lab bill, and you won't know the results right away.

Knowing your blood type grants you entry to the marvelous world of Blood Type Medicine pioneered by Dr. D'Adamo. I am personally more a Blood Type- than Genotype-follower (there's a quiz on his website that might help you decide which model would be most appropriate for you), but even the Genotype teaching is informed with blood type principles. Know your blood type - yes, even you, fellow American! Find a friend willing to perform the test on your finger if necessary, but order it and do it! Free shipping, $9.95 the pop. What's your excuse?

Last night we ate at an atypical Mexican restaurant with amazing food. It looked to me as though persons of every blood type could wrest a multi-course meal from its bold, extensive menu.

Called "Mamacita's", it is located in San Francisco's "yuppiest" neighborhood - The Marina. It was a Monday night, and the place was packed. There was a busy bar scene, too, viewed from afar.

We started with a shared appetizer of grilled scallops, served with a black bean coulis, a variety of tiny, kumquat-sized potatoes of various colors, miniature (Japanese?) artichokes, and grilled pencil asparagus. The scallops (a Nomad superfood) were dense and beefy, and very flavorful: The best scallops I've ever had. I wasn't crazy about the artichokes. For a B-nomad, the scallop/asparagus combination was perfect.

Then I actually passed over the lamb and kale taco for the carne asada taco, being in the mood for steak. It featured Niman ranch "organic" beef, a chili sauce, arugula, and flecks of goat cheese. David (type O) ordered the duck leg taco, with a sweet barbecue sauce and fruity slaw. The meat was perfectly marinated, very moist.

Okay, so we did order margaritas and enjoyed the chips and (tomato) salsa prelude. It would be worthwhile to go back to try the lamb, the mahi mahi, the various tuna dishes...

A Mexican restaurant with something for any and everyone. "Avoids" are easily dodged here; there's so much to choose from, and virtually everything is grilled. Clean food. Hooray!