However, how to lower BUN and creatinine level naturally? Both BUN and creatinine are metabolic waste products, and the healthy kidneys keep them range at a normal level. If kidneys canât play their job optimally, excess creatinine and blood urea nitrogen will build up in the body. Clinically, 5.0mg/dl of creatinine and 60mg/dl of BUN are two indicators of renal failure.
Your provider may also check your TSH level if you are planning to get pregnant. Normal values range from 0.4 to 4.0 milli-international units per liter (mIU/L). 1  TSH values can vary during the day. It is best to have the test early in the morning.  Experts do not fully agree on what the upper number should be. Opinions vary from 2.5 to 4.0 mIU/L.
What is a Normal TSH Level. The normal TSH thyroid level usually depends on the medical lab, clinic, or a consulting physician. Previously, the normal TSH levels ranged from between 0.5 to 5.5.