what is the normal tsh level
A blood sample for a TSH level is drawn by a phlebotomist or nurse from a vein in your arm or hand. The blood sample is sent to a laboratory for processing. Fasting is not required before having a TSH level drawn. Results. According the MedlinePlus.com, a normal TSH level is between 0.4 and 4.0 mlU/L. If you have a thyroid disorder and are receiving treatment, your physician may want to keep your thyroid level between 0.5 and 3.0 mlU/L. Considerations. Different laboratories may have slightly different normal ranges for a TSH level.