What causes high FT3 thyroid and low Phosphate?

High FT3 thyroid and low Phosphate can be caused by many reasons.

If your FT3 thyroid is in between 2.3 pg/mL and 4.2 pg/mL and your Phosphate is in between 2.4 mg/dL and 4.5 mg/dL then you need not worry as these are the normal ranges for FT3 thyroid and Phosphate 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 FT3 thyroid : 2.3 - 4.2 pg/mL

Ideal values of FT3 thyroid depending on age :

Age	Ideal FT3 thyroid value
<5 years	2.384
5-10 years	2.471
10-15 years	2.561
15-20 years	2.654
20-25 years	2.751
25-30 years	2.851
30-35 years	2.955
35-40 years	3.063
40-45 years	3.174
45-50 years	3.29
50-55 years	3.41
55-60 years	3.534
60-70 years	3.663
70-80 years	3.796
80-90 years	3.934
90-100 years	4.077
>100 years	4.071

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

If you want your blood test report to be interpreted by FT3 thyroid specialist, then you can upload your report. Our FT3 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

1,37,160

Total number of patients treated

Some examples of conditions that increase or decrease FT3 thyroid levels include:

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

If you want your blood test report to be interpreted by FT3 thyroid specialist, you can upload your report. Our FT3 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 Phosphate : 2.4 - 4.5 mg/dL

Ideal values of Phosphate depending on age :

Age	Ideal Phosphate value
<5 years	2.487
5-10 years	2.578
10-15 years	2.672
15-20 years	2.769
20-25 years	2.87
25-30 years	2.974
30-35 years	3.082
35-40 years	3.194
40-45 years	3.31
45-50 years	3.43
50-55 years	3.555
55-60 years	3.684
60-70 years	3.818
70-80 years	3.957
80-90 years	4.101
90-100 years	4.25
>100 years	4.405

High FT3 thyroid and low Phosphate can be caused by a lot of reasons. If you take FT3 thyroid and Phosphate blood tests and the results are higher than 4.2 pg/mL for FT3 thyroid and lower than 2.4 mg/dL for Phosphate, 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 FT3 thyroid and Phosphate Tests Are Done :

If your doctor wants FT3 thyroid and Phosphate tests on you, you may need to go through these tests. During the FT3 thyroid and Phosphate 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 FT3 thyroid and Phosphate Test reports by your pathologist.

Medical References

• MedlinePlus – Triiodothyronine (T3) Tests
• Cleveland Clinic – Triiodothyronine (T3) Test: What It Is, Function & Levels
• MedlinePlus – T3 test
• WebMD – T3 Tests: T3 Uptake Levels, Common Thyroid Conditions, and More
• NIH – How to interpret thyroid function tests