What causes high CRP and low FT3 thyroid?

High CRP and low FT3 thyroid can be caused by many reasons.

If your CRP is in between 0 mg/L and 3 mg/L and your FT3 thyroid is in between 2.3 pg/mL and 4.2 pg/mL then you need not worry as these are the normal ranges for CRP and FT3 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 CRP : 0 - 3 mg/L

Ideal values of CRP depending on age :

Age	Ideal CRP value
<5 years	0.11384
5-10 years	0.11781
10-15 years	0.12192
15-20 years	0.12618
20-25 years	0.13058
25-30 years	0.13514
30-35 years	0.13986
35-40 years	0.14474
40-45 years	0.14979
45-50 years	0.15502
50-55 years	0.16043
55-60 years	0.16603
60-70 years	0.17182
70-80 years	0.17782
80-90 years	0.18403
90-100 years	0.19045
>100 years	0.1971

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

If you want your blood test report to be interpreted by CRP specialist, then you can upload your report. Our CRP 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 CRP levels include:

• Inflammation
• Suspected bacterial infection
• Lupus
• Crohn disease
• Ulcerative colitis

If you want your blood test report to be interpreted by CRP specialist, you can upload your report. Our CRP 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 FT3 thyroid : 2.3 - 4.2 pg/mL

Ideal values of FT3 thyroid depending on age :

Age	Ideal FT3 thyroid value
<5 years	2.38
5-10 years	2.463
10-15 years	2.549
15-20 years	2.638
20-25 years	2.73
25-30 years	2.825
30-35 years	2.924
35-40 years	3.026
40-45 years	3.132
45-50 years	3.241
50-55 years	3.354
55-60 years	3.471
60-70 years	3.592
70-80 years	3.717
80-90 years	3.847
90-100 years	3.981
>100 years	4.12

High CRP and low FT3 thyroid can be caused by a lot of reasons. If you take CRP and FT3 thyroid blood tests and the results are higher than 3 mg/L for CRP and lower than 2.3 pg/mL for FT3 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 CRP and FT3 thyroid Tests Are Done :

If your doctor wants CRP and FT3 thyroid tests on you, you may need to go through these tests. During the CRP and FT3 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 CRP and FT3 thyroid Test reports by your pathologist.