THYROID HORMONES
																															PLASMA CONCENTRATION
												RELATIVE  POTENCY																														BOUND TO  PLASMA  PROTEINS
																					PRODUCTION																																			t½
		HORMONE
																							(µg/day)
																																(µg/dL)
																																																					(days)
																																													(%)
																																																						6-7
														+											80- 90
						T4
																																			8
																																											99.95
													+ + + +
																									4-8 (24)*
					T3
																																												99.7
																																		0.3																				1-3
							rT3																	2-3 (27) *
															-
																																	0.04																						0.1
																																														99.8
			*