What causes high Hematocrit and low FT4 thyroid?

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

If your Hematocrit is in between 40 % and 50 % 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 Hematocrit 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 Hematocrit : 40 - 50 %

Ideal values of Hematocrit depending on age :

Age	Ideal Hematocrit value
<5 years	40.88
5-10 years	41.779
10-15 years	42.698
15-20 years	43.637
20-25 years	44.597
25-30 years	45.578
30-35 years	46.581
35-40 years	47.606
40-45 years	48.653
45-50 years	49.723
50-55 years	49.699
55-60 years	49.675
60-70 years	49.651
70-80 years	49.627
80-90 years	49.603
90-100 years	49.579
>100 years	49.555

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

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

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Some examples of conditions that increase or decrease Hematocrit levels include:

• Damage to the bone marrow
• Kidney failure
• Excessive destruction of red blood cells
• Chronic inflammatory diseases
• Congenital heart disease

If you want your blood test report to be interpreted by Hematocrit specialist, you can upload your report. Our Hematocrit 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	0.90958
5-10 years	0.92959
10-15 years	0.95004
15-20 years	0.97094
20-25 years	0.9923
25-30 years	1.01413
30-35 years	1.03644
35-40 years	1.05924
40-45 years	1.08254
45-50 years	1.10636
50-55 years	1.1307
55-60 years	1.15558
60-70 years	1.181
70-80 years	1.20698
80-90 years	1.23353
90-100 years	1.26067
>100 years	1.2884

High Hematocrit and low FT4 thyroid can be caused by a lot of reasons. If you take Hematocrit and FT4 thyroid blood tests and the results are higher than 50 % for Hematocrit 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 Hematocrit and FT4 thyroid Tests Are Done :

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