What causes high D Dimer and low FT4 thyroid?

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

If your D Dimer is in between 0 ug/mL and 0.51 ug/mL 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 D Dimer 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 D Dimer : 0 - 0.51 ug/mL

Ideal values of D Dimer depending on age :

Age	Ideal D Dimer value
<5 years	0.114
5-10 years	0.118
10-15 years	0.122
15-20 years	0.126
20-25 years	0.13
25-30 years	0.135
30-35 years	0.14
35-40 years	0.145
40-45 years	0.15
45-50 years	0.155
50-55 years	0.16
55-60 years	0.166
60-70 years	0.172
70-80 years	0.178
80-90 years	0.184
90-100 years	0.19
>100 years	0.197

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

If you want your blood test report to be interpreted by D Dimer specialist, then you can upload your report. Our D Dimer 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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Total number of patients treated

Some examples of conditions that increase or decrease D Dimer levels include:

• Smoking
• Obesity
• Clotting disorder such as factor V Leiden mutation
• Antiphospholipid syndrome
• Prolonged immobility

If you want your blood test report to be interpreted by D Dimer specialist, you can upload your report. Our D Dimer 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 D Dimer and low FT4 thyroid can be caused by a lot of reasons. If you take D Dimer and FT4 thyroid blood tests and the results are higher than 0.51 ug/mL for D Dimer 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 D Dimer and FT4 thyroid Tests Are Done :

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