There are many things that can elevated ALT. If EBV virus is a concern, you can have blood tests done to evaluate for EBV specifically. HIV is also possible, and can be ruled out with appropriate HIV testing.
One consideration would be primary biliary cirrhosis or primary sclerosing cholangitis - which can have itchiness associated with elevated liver function tests. This can be tested for using anti-mitochondrial antibodies or an ERCP respectively.
You can discuss these options with your personal physician or in conjunction with a gastroenterology referral.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b