What causes high FT4 thyroid and low Ferritin?

High FT4 thyroid and low Ferritin can be caused by many reasons.

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your Ferritin is in between 22 ng/mL and 322 ng/mL then you need not worry as these are the normal ranges for FT4 thyroid and Ferritin respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.91946
5-10 years	0.94989
10-15 years	0.98133
15-20 years	1.01381
20-25 years	1.04737
25-30 years	1.08204
30-35 years	1.11786
35-40 years	1.15486
40-45 years	1.19309
45-50 years	1.23258
50-55 years	1.27338
55-60 years	1.31553
60-70 years	1.35907
70-80 years	1.40406
80-90 years	1.45053
90-100 years	1.49854
>100 years	1.54814

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

If you want your blood test report to be interpreted by FT4 thyroid specialist, then 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

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Total number of patients treated

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

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

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

Normal range of Ferritin : 22 - 322 ng/mL

Ideal values of Ferritin depending on age :

Age	Ideal Ferritin value
<5 years	22.728
5-10 years	23.48
10-15 years	24.257
15-20 years	25.06
20-25 years	25.889
25-30 years	26.746
30-35 years	27.631
35-40 years	28.546
40-45 years	29.491
45-50 years	30.467
50-55 years	31.475
55-60 years	32.517
60-70 years	33.593
70-80 years	34.705
80-90 years	35.854
90-100 years	37.041
>100 years	38.267

High FT4 thyroid and low Ferritin can be caused by a lot of reasons. If you take FT4 thyroid and Ferritin blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 22 ng/mL for Ferritin, your physician may recommend more tests to figure out the problem. You might also get these tests if your physician thinks you have some other disease.

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How the FT4 thyroid and Ferritin Tests Are Done :

If your doctor wants FT4 thyroid and Ferritin tests on you, you may need to go through these tests. During the FT4 thyroid and Ferritin blood tests, a pathologist will put a needle into your veins and take out a small quantity of blood. A pathologist is a physician in the medical field who thoroughly studies the causes and effects of disease. Within a few hours you will get your FT4 thyroid and Ferritin Test reports by your pathologist.