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Question about accuracy of free t4 test
Hello, I had a recent blood draw in which my GP threw in a T4F without telling me so I took my thyroid medication like usual and had the blood drawn about 3.5 hours later. I usually skip my meds until after a blood draw if I’m expecting thyroid labs to be done. My T4 level was 1.9 (0.8-1.7) and I’m
Hello, I had a recent blood draw in which my GP threw in a T4F without telling me so I took my thyroid medication like usual and had the blood drawn about 3.5 hours later. I usually skip my meds until after a blood draw if I’m expecting thyroid labs to be done. My T4 level was 1.9 (0.8-1.7) and I’m
shirlzoni
in
Thyroid UK
10 days ago
No t3 or t4 test this time..
My recent blood test showed my tsh was within normal range but Consultant didn't request t3 or t4. I have been advised to continue on 15 my carbimazole. Should I have had t3 and t4 tested? I always have in the past but not this time, for some reason.. not feeling particularly brilliant either.. 😒
My recent blood test showed my tsh was within normal range but Consultant didn't request t3 or t4. I have been advised to continue on 15 my carbimazole. Should I have had t3 and t4 tested? I always have in the past but not this time, for some reason.. not feeling particularly brilliant either.. 😒
Cinka
in
Graves Disease Support
29 days ago
High T4 - Test Results
CRP -HS 2-690 mg/L Range under 3 Ferritin 185.00 ug/L ( 30-650) Folate - sample error Vit B12 Active 83.2 pmol/L (37.5 - 188) Vit D
CRP -HS 2-690 mg/L Range under 3 Ferritin 185.00 ug/L ( 30-650) Folate - sample error Vit B12 Active 83.2 pmol/L (37.5 - 188) Vit D
Fortie
in
Thyroid UK
7 months ago
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Blood test this morning
I have got a blood
test
at 9.15 in private clinic setting. I took
t4
at 6.15 yesterday morning. Do I take the
t4
now before blood
test
as may be false low? Previously high
t4
after taking thyroxine (NHS) and also after MMH finger prick
test
(without taking
t4
).
I have got a blood
test
at 9.15 in private clinic setting. I took
t4
at 6.15 yesterday morning. Do I take the
t4
now before blood
test
as may be false low? Previously high
t4
after taking thyroxine (NHS) and also after MMH finger prick
test
(without taking
t4
).
Sailing14
in
Thyroid UK
18 days ago
T4 test only.
Hey Everyone, I've been back for another blood test this morning and the phlebotomist said she has only been told [by the doctor] to take bloods for T4 testing.Is this standard? Im sure that last time i was tested for TSH and antibodies, of which TSH was just within range and antibodies were well out
Hey Everyone, I've been back for another blood test this morning and the phlebotomist said she has only been told [by the doctor] to take bloods for T4 testing.Is this standard? Im sure that last time i was tested for TSH and antibodies, of which TSH was just within range and antibodies were well out
BiffAHiram
in
Thyroid UK
9 months ago
After 25 years on Thyroxine, blood results are now odd!
The TSH and
T4
test
were more or less in sync up to about a year ago. I am now getting high TSH (12.9miu/L) and my T4 is near the top of the limit at 19.4pmol/L. I was taking 150mg of thyroxine for many years but started to get heart palpitations.
The TSH and
T4
test
were more or less in sync up to about a year ago. I am now getting high TSH (12.9miu/L) and my T4 is near the top of the limit at 19.4pmol/L. I was taking 150mg of thyroxine for many years but started to get heart palpitations.
JojoDee
in
Thyroid UK
2 months ago
Low TSH & Low T4
Doctor did a TSH and
T4
test
and then phoned me to reduce my
T4
to 50mcg. My TSH was 0.023 and my T4 was 8.2. The reduction of T4 meds made me very ill, I crashed 4 days later and I was virtually bedbound for 10 days before I worked out was going on.
Doctor did a TSH and
T4
test
and then phoned me to reduce my
T4
to 50mcg. My TSH was 0.023 and my T4 was 8.2. The reduction of T4 meds made me very ill, I crashed 4 days later and I was virtually bedbound for 10 days before I worked out was going on.
MerCorn
in
Thyroid UK
3 months ago
TSH massive reduction??
My TSH level = 0.2 My
T4
= 12.9.
Test
results from yesterday (21.8.2024). Test results from 5 months ago My TSH level = 5.6 My TSH level = 9.2 Notes: I have never had a TSH level below 2.5. I'm sure I had a bad batch of Thyroid-S regarding my last results.
My TSH level = 0.2 My
T4
= 12.9.
Test
results from yesterday (21.8.2024). Test results from 5 months ago My TSH level = 5.6 My TSH level = 9.2 Notes: I have never had a TSH level below 2.5. I'm sure I had a bad batch of Thyroid-S regarding my last results.
Booblet
in
Thyroid UK
27 days ago
T3/T4 medication
Wanted to seek advice from you kind folks on adjusting t3/
t4
medication please This was my
test
results on 20mg T3 and 32.5
T4
. Wanted advice on ideas to tweak my medication. Much appreciated your time
Wanted to seek advice from you kind folks on adjusting t3/
t4
medication please This was my
test
results on 20mg T3 and 32.5
T4
. Wanted advice on ideas to tweak my medication. Much appreciated your time
Sofiel
in
Thyroid UK
24 days ago
Are these results "subclinical"?
my
T4
was lower than range in the rust
test
- do you think that warrants medication.
my
T4
was lower than range in the rust
test
- do you think that warrants medication.
Granolalovers2
in
Thyroid UK
4 months ago
Determined to get t4 & t3 tested by nhs
How the GP is blocked from even requesting a
T4
test
thus won't prescribe more. Quoted the NICE guidelines. They said they would investigate.... You know what response I got back???
How the GP is blocked from even requesting a
T4
test
thus won't prescribe more. Quoted the NICE guidelines. They said they would investigate.... You know what response I got back???
Obsdian
in
Thyroid UK
5 months ago
NHS Testing
Hi - those of use lucky enough to be prescribed T3 on the NHS: Does your endocrinologist
test
T3 and
T4
or just TSH? I know too many just rely on TSH but to the extent that they don’t even
test
T3 or
T4
when you’re on Liothyronine? I had a monitoring
test
that seems to only have been TSH.
Hi - those of use lucky enough to be prescribed T3 on the NHS: Does your endocrinologist
test
T3 and
T4
or just TSH? I know too many just rely on TSH but to the extent that they don’t even
test
T3 or
T4
when you’re on Liothyronine? I had a monitoring
test
that seems to only have been TSH.
GW1000
in
Thyroid UK
5 days ago
8 weeks pregnant results
Free T4 19.5 10.8 - 25.5 (59.2%) Free T3 6.1 3.1 - 6.8 (81.1%) TSH 0.002 (0.27-4.2) So, the consultant who managing my pregnancy did an unexpected tsh and
T4
test
at 2pm (so about 12 hours after my dose of levo and lio). It showed that I was over range and suppressed tsh.
Free T4 19.5 10.8 - 25.5 (59.2%) Free T3 6.1 3.1 - 6.8 (81.1%) TSH 0.002 (0.27-4.2) So, the consultant who managing my pregnancy did an unexpected tsh and
T4
test
at 2pm (so about 12 hours after my dose of levo and lio). It showed that I was over range and suppressed tsh.
Cassav
in
Thyroid UK
2 months ago
Husband's new results TSH and T4 March 2024
My husband's last TSH and
T4
blood
test
was Nov 2023.His latest results are as follows FT4 15.9 pmol/L 10.80 - 25.50pmol/L TSH 7.66mIU/L 0.27 - 4.20mIU/L The TSH has reduced slightly and his FT4 has increased . He has been told to redo bloods in a month.
My husband's last TSH and
T4
blood
test
was Nov 2023.His latest results are as follows FT4 15.9 pmol/L 10.80 - 25.50pmol/L TSH 7.66mIU/L 0.27 - 4.20mIU/L The TSH has reduced slightly and his FT4 has increased . He has been told to redo bloods in a month.
DandyButch
in
Thyroid UK
5 months ago
hello 🦋 sos 🆘 help please PN1P is 106 bones and Ctx 0.5
hello please I am having a panic attack PN1P bones is 106 and CTX is about 0.5 I am on t3 30mcg and 112mg
t4
Last blood
test
T4
16 12 to 22 T3 5.7 4.1 to 6.8 Tsh -0.01 Tests done as advised please can someone advise what this means ?
hello please I am having a panic attack PN1P bones is 106 and CTX is about 0.5 I am on t3 30mcg and 112mg
t4
Last blood
test
T4
16 12 to 22 T3 5.7 4.1 to 6.8 Tsh -0.01 Tests done as advised please can someone advise what this means ?
Chouchou1234
in
Thyroid UK
2 months ago
T3 not tested
why won’t they
test
t3 in England …. My doctor says they don’t
test
only
t4
why won’t they
test
t3 in England …. My doctor says they don’t
test
only
t4
Catlady73
in
Thyroid UK
8 months ago
The relationship between Tsh and T4
I have a medichecks
test
booked for Monday to do tsh/
t4
/t3 as I have been convinced this could give me answers. Now... Could you please elaborate on how it works that tsh can be normal but t4 might possibly be low (and t3 too, I guess, but one thing at a time).
I have a medichecks
test
booked for Monday to do tsh/
t4
/t3 as I have been convinced this could give me answers. Now... Could you please elaborate on how it works that tsh can be normal but t4 might possibly be low (and t3 too, I guess, but one thing at a time).
Obsdian
in
Thyroid UK
5 months ago
Got in a mess over reduction of T4
He didn’t question the tablet and never seems to regarding whether to take or not take
t4
before
test
. He saw my NHS normal result from June (again
T4
taken 2 hours before by mistake).
He didn’t question the tablet and never seems to regarding whether to take or not take
t4
before
test
. He saw my NHS normal result from June (again
T4
taken 2 hours before by mistake).
Sailing14
in
Thyroid UK
10 days ago
Can b complex with biotin cause elevated T4?
I had stopped my b complex (PinkTribe liposomal b complex) 3 days before the
test
. The result of the
T4
was 25 (11 - 21) whereas the
test
I had about 3 weeks ago at my Gp, when I had stopped the b complex, was well within the range at 16 (9 -23) - different hospitals hence different ranges.
I had stopped my b complex (PinkTribe liposomal b complex) 3 days before the
test
. The result of the
T4
was 25 (11 - 21) whereas the
test
I had about 3 weeks ago at my Gp, when I had stopped the b complex, was well within the range at 16 (9 -23) - different hospitals hence different ranges.
Pinkpetite
in
Thyroid UK
3 months ago
Advice please
Please could I receive advice on these latest MMH private
test
results. I increased
T4
to 100 mcg from 75/100 ten weeks ago due to low T4 (for me but within range) now T4 abnormal. Palpitations were the main reason to increase and these subsided once I did.
Please could I receive advice on these latest MMH private
test
results. I increased
T4
to 100 mcg from 75/100 ten weeks ago due to low T4 (for me but within range) now T4 abnormal. Palpitations were the main reason to increase and these subsided once I did.
Sailing14
in
Thyroid UK
7 months ago
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