Great Smokies changed their name to Genova. This test is not nearly as sensitive as the Metametrix test. They might do an ok job for the GI, but I really suggest you go for a Metametrix test because it is the most sensitive to parasites and protozoa.
By the way, do you think it's safe to purchase chlorella from Japan? I usually get the SUN brand, but since the earthquake, I am unsure whether it's safe.