No, it wasn't. The bit Baltar pulled out of his ass was spetroscopy, which the BS he used to get Doral put off the ship. They cremated a tissue sample from Leoban and it yielded synthetic compounds. Watch the pilot again. It's the scene where Adama and Tigh tell Baltar that there are humanoid Cylons.

Of course, it could have been Brain tissue or some other such that they can't get while the subject is alive. Until Adama pulls out the body in Flesh and Bone, I was under the impression that they had cremated the whole thing.