Yes. All horses six months of age and older require a negative test for Equine Infectious Anemia (Coggins test or CELISA) within 12 months prior to importation. The test result, date of test, lab name and lab accession number must be recorded on the health certificate. Horses may not enter with the test results pending. Changes in Arizona's laws in August 2002 created a voluntary horse registration program.There is no penalty if you choose not to participate.