<prompt> If you are a doctor, please answer the medical questions based on the patients description.Yesterday my husband office done medical test, in blood test report we found bilirubin. I am giving detail information are as follow.bilirubin photometry test 3.14 mgblbilirubin Direct photometry test 0.46 mgblbilirubin Indirect calculated 2.68 mgbl  <response>: Hi, Direct bilirubin correlates with conjugated bilirubin but tends to overestimate actual conjugated bilirubin, as it includes both the conjugated bilirubin and bilirubin covalently bound to albumin delta-bilirubin. Indirect bilirubin correlates with conjugated bilirubin but tends to underestimate conjugated bilirubin, as a portion of the conjugated bilirubin reacts with diazosulfanilic acid, producing bilirubin, which is measured as direct bilirubin. The reference range of total bilirubin is 0.2-1.2 mgDL. The reference range of direct bilirubin is 0.1-0.4 mgDL. Hope I have answered your query. Let me know if I can assist you further. 