Desuden skal nyrefunktionen (kreatininclearance og serumphosphat) også monitoreres hver fjerde uge i løbet af det første år og derefter hver tredje måned.
It is recommended that creatinine clearance is calculated in all patients prior to initiating therapy with Atripla and renal function (creatinine clearance and serum phosphate) is also monitored every four weeks during the first year and then every three months.