Do a thorough physical examination including that of genitalia. Development assessment of a child, preferably by a specialist is desirable. Many children coming from orphanages have delayed development due to lack of stimulation. After adoption most of them show remarkable improvement in next few days. Given below is a list of tests from which you can choose or add according to the circumstances.
Hepatitis B – HBsAg , IgM and IgG HBc Ag
Hepatitis C Antibody
HIV 1 and 2 serology or PCR during newborn period upto 18 months of age