What causes high Phosphate and low FT4 thyroid?

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

If your Phosphate is in between 2.4 mg/dL and 4.5 mg/dL and your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL then you need not worry as these are the normal ranges for Phosphate and FT4 thyroid 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 Phosphate : 2.4 - 4.5 mg/dL

Ideal values of Phosphate depending on age :

Age	Ideal Phosphate value
<5 years	2.484
5-10 years	2.571
10-15 years	2.661
15-20 years	2.754
20-25 years	2.85
25-30 years	2.95
30-35 years	3.053
35-40 years	3.16
40-45 years	3.271
45-50 years	3.385
50-55 years	3.503
55-60 years	3.626
60-70 years	3.753
70-80 years	3.884
80-90 years	4.02
90-100 years	4.161
>100 years	4.307

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

If you want your blood test report to be interpreted by Phosphate specialist, then you can upload your report. Our Phosphate 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 Phosphate levels include:

• Kidney failure
• Rickets and osteomalacia (due to vitamin D deficiencies)
• Diabetic ketoacidosis (after treatment)
• Increased blood calcium
• Liver disease

If you want your blood test report to be interpreted by Phosphate specialist, you can upload your report. Our Phosphate 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 FT4 thyroid : 0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.92115
5-10 years	0.95339
10-15 years	0.98676
15-20 years	1.0213
20-25 years	1.05705
25-30 years	1.09405
30-35 years	1.13234
35-40 years	1.17197
40-45 years	1.21299
45-50 years	1.25544
50-55 years	1.29938
55-60 years	1.34486
60-70 years	1.39193
70-80 years	1.44065
80-90 years	1.49107
90-100 years	1.54326
>100 years	1.59727

High Phosphate and low FT4 thyroid can be caused by a lot of reasons. If you take Phosphate and FT4 thyroid blood tests and the results are higher than 4.5 mg/dL for Phosphate and lower than 0.89 ng/dL for FT4 thyroid, 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 Phosphate and FT4 thyroid Tests Are Done :

If your doctor wants Phosphate and FT4 thyroid tests on you, you may need to go through these tests. During the Phosphate and FT4 thyroid 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 Phosphate and FT4 thyroid Test reports by your pathologist.

Medical References

• MedlinePlus – Phosphate in Blood
• WebMD – Phosphate Blood Test: Purpose, High vs. Low vs. Normal Levels
• MedlinePlus – Phosphate in Urine