Desuden skal nyrefunktionen (kreatinin- clearance og serumfosfat) også overvåges 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 Truvada and renal function (creatinine clearance and serum phosphate) is also monitored every four weeks during the first year and then every three months.