Zip Code 23803 Population. 23803 is located in the state of Virginia in the Richmond metro area. Zip code 23803 is primarily located in Chesterfield County. Portions of 23803 are also located in Dinwiddie County.The official postal service name used for 23803 is PETERSBURG, Virginia.ip Code 23803 Area Codes. 23803 is located in the state of Virginia in the Richmond metro area. Zip code 23803 is primarily located in Chesterfield County. Portions of 23803 are also located in Dinwiddie County.
Cytomel (T3) is rarely prescribed on its own to address thyroid problems; it is usually prescribed with T4. In the past, cytomel was a scheduled treatment for obesity; however, an increase in heart complications and cardiac stress forced withdrawal of T3 for that application.
A free or total triiodothyronine (free T3 or total T3) test is used to assess thyroid gland function, to diagnose a thyroid disorder, and to monitor treatment of a thyroid disorder. Tests are ordered because of an abnormal TSH test result or as part of the investigative workup when a person has symptoms suggesting hyperthyroidism.