Observer bias occurs when researchers alter the outcome of a study. This process is not typically deliberate, and involves extremely subtle changes both in the way researchers interact with subjects in the study and in what observers choose to see.
What is an elevated INR? The INR, or International Normalized Ratio, is a measure of how long it takes your blood to clot. A prothrombin time (PT) is a another blood test done to help measure your INR. The higher your PT or INR, the longer your blood takes to clot. An elevated PT or INR means your blood is taking longer to clot than your healthcare provider believes is healthy for you. When your PT or INR is too high, you have an increased risk of bleeding. What increases my risk for an elevated INR?
Causes Of Elevated BUN and Creatinine Levels: There are many causes of elevated BUN and Creatinine levels, including: 1  There may be a blockage of blood flow to or from the kidney.2  You may be dehydrated. 3  A urinary infection, or nephritis (inflammation of one or more of your kidneys). 4  Drug toxicity-risk for kidney problems may be from: 5  Chemotherapy drugs such as: Cisplatin, Carboplatin, ... 6  Bioloephrotoxicity can be temporary with a temporary elevation of lab values (BUN and/or creatinine). If these levels are elevated, these may be due to a temporary condition such as dehydration or you may be developing renal (kidney failure).