<prompt> A patient has Hb 6 gm ,folic acid 8ngml, vitamin B12 60 pgml, serum iron 130 microgdl, and MCV-104. The diagnosis is -Iron deficiency anaemiaVitamin Bl2 deficiencyFolic acid deficiencyPyridoxine deficiency  <response>: Normal range of vit B12 in serum is 280-1000pgmL.. Values below 100pgmL indicate clinically deficient stage. Normal range of serum folate is 6-18ngmL. Normal serum iron is 40-140 microgramdL.In this case it is within normal limit.Reference :Harsh mohan textbook of pathology sixth edition pg no 308. 