What causes high RDW SD and low FT4 thyroid?

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

If your RDW SD is in between 39 fL and 46 fL 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 RDW SD 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 RDW SD : 39 - 46 fL

Ideal values of RDW SD depending on age :
Age Ideal RDW SD value
<5 years 39.683
5-10 years 40.377
10-15 years 41.084
15-20 years 41.803
20-25 years 42.535
25-30 years 43.279
30-35 years 44.036
35-40 years 44.807
40-45 years 45.591
45-50 years 45.577
50-55 years 45.563
55-60 years 45.549
60-70 years 45.535
70-80 years 45.521
80-90 years 45.507
90-100 years 45.493
>100 years 45.479

If you want your blood test report to be interpreted by RDW SD specialist, then you can upload your report. Our RDW SD expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

Your RDW SD result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High RDW SD

Click here to know Symptoms of Low FT4 thyroid

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

Normal range of RDW SD found among women : - fL

Ideal values of FT4 thyroid depending on age :
Age Ideal FT4 thyroid value
<5 years 0.90558
5-10 years 0.92143
10-15 years 0.93756
15-20 years 0.95397
20-25 years 0.97066
25-30 years 0.98765
30-35 years 1.00493
35-40 years 1.02252
40-45 years 1.04041
45-50 years 1.05862
50-55 years 1.07715
55-60 years 1.096
60-70 years 1.11518
70-80 years 1.1347
80-90 years 1.15456
90-100 years 1.17476
>100 years 1.19532

Click here to know Symptoms of High RDW SD

Click here to know Symptoms of Low FT4 thyroid

Click here to upload your blood test report

Click here to consult a doctor for your Low RDW SD problem

High RDW SD and low FT4 thyroid can be caused by a lot of reasons. If you take RDW SD and FT4 thyroid blood tests and the results are higher than 46 fL for RDW SD 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 RDW SD and FT4 thyroid Tests Are Done :

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

Click here to upload your blood test report

Click here to consult a doctor for your Low RDW SD problem

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