What causes high FT4 thyroid and low RBC?

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

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your RBC is in between 4.5 mil/uL and 5.5 mil/uL then you need not worry as these are the normal ranges for FT4 thyroid and RBC 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	0.91679
5-10 years	0.94439
10-15 years	0.97282
15-20 years	1.0021
20-25 years	1.03226
25-30 years	1.06333
30-35 years	1.09534
35-40 years	1.12831
40-45 years	1.16227
45-50 years	1.19725
50-55 years	1.23329
55-60 years	1.27041
60-70 years	1.30865
70-80 years	1.34804
80-90 years	1.38862
90-100 years	1.43042
>100 years	1.47348

*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

1,37,160

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 RBC : 4.5 - 5.5 mil/uL

Ideal values of RBC depending on age :

Age	Ideal RBC value
<5 years	4.635
5-10 years	4.775
10-15 years	4.919
15-20 years	5.067
20-25 years	5.22
25-30 years	5.377
30-35 years	5.372
35-40 years	5.367
40-45 years	5.363
45-50 years	5.358
50-55 years	5.353
55-60 years	5.348
60-70 years	5.343
70-80 years	5.338
80-90 years	5.499
90-100 years	5.494
>100 years	5.489

High FT4 thyroid and low RBC can be caused by a lot of reasons. If you take FT4 thyroid and RBC blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 4.5 mil/uL for RBC, 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.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

How the FT4 thyroid and RBC Tests Are Done :

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