At entry into care and at initiation of ART (and if changing ART regimen): Physical examination, adherence evaluation, complete blood count, serum chemistry values including electrolytes, liver and kidney tests, HIV plasma viral load, CD4+ lymphocyte counts, and, for adolescent girls, a pregnancy test Every 3 to 4 months: Physical examination, adherence evaluation, complete blood count, serum chemistry values, including electrolytes, liver and kidney tests, HIV plasma viral load, and CD4+ lymphocyte counts Every 6 to 12 months: Lipid profiles and urinalysis; complete blood count and serum chemistry values including electrolytes, and liver and kidney tests if not done already in those with a stable clinical status; adherence evaluation HIV genotypic resistance testing should be done at entry into care and upon ART changes due to presumed virologic failure.