Is FT4 thyroid 1.64 normal, high or low? What does Free thyroxine level 1.64 mean?

Your FT4 thyroid level of 1.64 is a Normal FT4 thyroid level.

Normal FT4 thyroid levels could indicate health issues. Typically, levels between 0.89 ng/dL to 1.76 ng/dL suggest no concerns. However, deviations from this range warrant prompt medical attention. Consulting a doctor for abnormal levels is advisable.

Normal range of FT4 thyroid found among men :0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age (male) :

Age	Ideal FT4 thyroid value
<5 years	0.9046
5-10 years	0.91944
10-15 years	0.93452
15-20 years	0.94985
20-25 years	0.96543
25-30 years	0.98126
30-35 years	0.99735
35-40 years	1.01371
40-45 years	1.03033
45-50 years	1.04723
50-55 years	1.0644
55-60 years	1.08186
60-70 years	1.0996
70-80 years	1.11763
80-90 years	1.13596
90-100 years	1.15459
>100 years	1.17353

*Ideal values ​are calculated based on our database of patient records

Get Advice via Email : Send us your blood test report, and our FT4 thyroid experts will check it. Within 12 hours, expect a detailed analysis and precise treatment guidance delivered to your email. If you've had additional blood tests apart from FT4 thyroid, please upload those too. A thorough diagnosis often relies on assessing all abnormalities for an accurate assessment. Upload blood test report now

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A video message on the treatment of your normal FT4 thyroid level

If you want your blood test report to be interpreted by FT4 thyroid specialist, you can upload your report. Our FT4 thyroid expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours.Upload blood test report now

Some examples of conditions that increase or decrease FT4 thyroid levels include:

• Autoimmune disease
• A non-functioning thyroid gland
• Thyroiditis
• Diabetes
• Liver disease

Receive world-class medical opinion about your normal FT4 thyroid levels over email.Upload blood test report now

Normal range of FT4 thyroid found among women :0.89-1.76 ng/dL

Ideal values of FT4 thyroid depending on age (female) :

Age	Ideal FT4 thyroid value
<5 years	0.90503
5-10 years	0.92032
10-15 years	0.93587
15-20 years	0.95168
20-25 years	0.96776
25-30 years	0.98411
30-35 years	1.00073
35-40 years	1.01763
40-45 years	1.03482
45-50 years	1.0523
50-55 years	1.07008
55-60 years	1.08816
60-70 years	1.10654
70-80 years	1.12523
80-90 years	1.14424
90-100 years	1.16357
>100 years	1.18323

If you take a FT4 thyroid blood test and the results are not in the normal range (0.89-1.76 ng/dL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the FT4 thyroid Test Is Done :

When your doctor recommends a FT4 thyroid test, you'll likely undergo a simple blood draw specifically targeting the measurement of FT4 thyroid. A pathologist, a specialist in studying diseases, will collect a small blood sample from your veins using a needle. Your FT4 thyroid test results will typically be available within a few hours after this procedure.