B Complex Profile analysis is used to assess the levels of essential B vitamins, which play a vital role in many body functions. This test measures the levels of vitamin B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folic acid), and B12 (cobalamin). It helps identify vitamin deficiencies that may affect energy levels, nerve health, and red blood cell production, assisting physicians in guiding appropriate treatment and nutritional support for patients.