What causes high FT4 thyroid and low Segmented Neutrophils?

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

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your Segmented Neutrophils is in between 40 % and 80 % then you need not worry as these are the normal ranges for FT4 thyroid and Segmented Neutrophils respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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

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

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	0.91768
5-10 years	0.94622
10-15 years	0.97565
15-20 years	1.00599
20-25 years	1.03728
25-30 years	1.06954
30-35 years	1.1028
35-40 years	1.1371
40-45 years	1.17246
45-50 years	1.20892
50-55 years	1.24652
55-60 years	1.28529
60-70 years	1.32526
70-80 years	1.36648
80-90 years	1.40898
90-100 years	1.4528
>100 years	1.49798

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

Normal range of Segmented Neutrophils : 40 - 80 %

Ideal values of Segmented Neutrophils depending on age :

Age	Ideal Segmented Neutrophils value
<5 years	41.244
5-10 years	42.527
10-15 years	43.85
15-20 years	45.214
20-25 years	46.62
25-30 years	48.07
30-35 years	49.565
35-40 years	51.106
40-45 years	52.695
45-50 years	54.334
50-55 years	56.024
55-60 years	57.766
60-70 years	59.563
70-80 years	61.415
80-90 years	63.325
90-100 years	65.294
>100 years	67.325

High FT4 thyroid and low Segmented Neutrophils can be caused by a lot of reasons. If you take FT4 thyroid and Segmented Neutrophils blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 40 % for Segmented Neutrophils, 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 Segmented Neutrophils Tests Are Done :

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

Medical References

• MedlinePlus – Thyroxine (T4) Test
• Cleveland Clinic – T4 (Thyroxine) Test: What It Is, Function, Purpose & Levels
• MedlinePlus – Free T4 test
• WebMD – What Is a Thyroxine (T4) Blood Test?
• Mayo Clinic – Hypothyroidism (underactive thyroid) - Diagnosis and treatment