Back in 2015 I had some hair loss and the gp ran a shed load of blood tests. The result was I was started on iron and vit d. Someone also said my thyroid was borderline and to repeat in September. No one ever booked me an appt so I asked and got my thuroid repeated.. So I was told. Now I'm getting hair loss again i went back to the gp and she said that actually the borderline result was never repeated. She said the T4 was 0.469 and it was either high or low. Can anyone tell me more? I don't know what the normal range is? I'm having repeat bloods this Friday. Thanks!