question: I am suffering from pain on my back, at left side flank.. When I consulted doctor he said that it doesnt seem like kidney pain but still it better to go for some tests, which were Renal function test, Clood CP and ESR and X-rays.. Renal Function tests are normal.. result is as follows.Normal RangesSerum Urea 3.9 mmol/l 3.3- 6.7Serum Creatinine 93 umol/l 70-115 Serum Sodium 141 mmol/l 136-149Serum Potassium 4.1 mmol/l 3.5-5.0Result of Blood CP and ESRBlood count TLC 8.0                      4.0- 10.0 X 10 9/LRBC 5.59                    4.5-6.50Hemoglobin                 13.7 13.0- 17.0PCV 0.45                     0.40-0.54 I/LMCV 81.0                     76.0-96.0 fLMCH 24.5                      27.0-32.0 pgMCHC 30.2                   31.5-34.5 g/dlPalatelet count     170     150-400 X 10 9/LDifferential Leucocytes CountNeutrophilis 47                 40-80%Lymphocytes                    43 20-40%Monocytes 04                   2-10%Eosinophils                       06 1-6%Erythrocyte Sedimentation  04          0-9 mm at 1st hourURINE REColor                   Pale YellowSP Gravity          1.015pH                       6.5Reaction              AcidicProtein                 NilGlucose                NilRBCs                   NilWBC/HPF             2-4/HPFPLease guide about the decreased MCH and MCHC adn increased Lymphocytes. though these are disturbed by little margin but still what could be the possible reason for that and which test should I go for next...