|Stribild and creatrinine clearance
Mar 25, 2013
. I used the cockroft-gault formula for my creat clearance and all seems well. Gilead says not to start if your cr clearance is less than 70 and discontinue when less than 50. Here are my values: sept 2011 107.00 pre-stribild April 2012 106.00 pre-stribild oct 03, 2012 115.00 pre-stribild oct 08 2012 started stribild oct 31 2012 93.00 post-stribild jan 24 2013 83.00 " jan 31 2013 91.0 " mar 11 2013 88.5 " You can see that my creatinine clearance levels are trending downward. What would you do based on this trend?
Response from Dr. Henry
Starting Stribild results in an increase in serum creatinine within two weeks based on cobicistat interfering with the tubular secretion of creatinine (usually increase of 0.10 mg/dl). Since the equations used for estimating glomerular filtration rate (GFR-blood flow through kidney) utilized the serum creatinine, an increase in creatinine is reflected in a decreased in estimate GFR. Your estimated GFR levels are fairly typical for what is seen after starting Stribild so I would not been overly concerned about the changes observed but would still monitor. KH
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