The last 2 blood tests I had have gone awry... For the last year, I've followed the guidance on here re timings, dosage fasting etc. But the last 2 were sprung on me last minute, so I had taken my levo dose the night before and my blood test was late morning, plus I'd eaten.
These 2 blood tests were:
JUNE
Tsh 0.24 (0.27-4.2). FT4 20.6 (10.8-25.5)
AUG
Tsh 0.23 (0.27-4.2). Ft4 22. 3(10.8-25.5)
Previously, following the blood test timing guidance on here I was
MARCH
Tsh 1. 32 (0.27-4.2). FT4 17.9 (10.8-25.5)
Is this how blood test timings effects the results? My dose has not changed.
Written by
JUUJOO
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Recommended that all thyroid blood tests early morning, ideally just before 9am, only drink water between waking and test and last dose levothyroxine 24 hours before test
This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)
On T3 - day before test split T3 as 2 or 3 smaller doses spread through the day with last dose 8-12 hours before test
Private tests are available as NHS currently rarely tests Ft3 or all relevant vitamins
List of private testing options and money off codes
I'd say the results of those last two tests were at very least unreliable. Before you or you doctor make any changes, I'd certainly retest using your normal test "protocol".
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Blood test results help
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