What does high RDW SD and FT4 thyroid mean in blood test?
High RDW SD and FT4 thyroid can be caused by numerous problems.
High levels of RDW SD and FT4 thyroid in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the FT4 thyroid level is between 0.89 fL to 1.76 ng/dL, then your body does not have any underlying health problems. But if RDW SD and FT4 thyroid levels exceed these levels, you should see a doctor immediately.
Normal RDW SD range : 39 - 46 fL
| Age | Ideal RDW SD value |
|---|---|
| <5 years | 39.722 |
| 5-10 years | 40.457 |
| 10-15 years | 41.205 |
| 15-20 years | 41.967 |
| 20-25 years | 42.743 |
| 25-30 years | 43.534 |
| 30-35 years | 44.339 |
| 35-40 years | 45.159 |
| 40-45 years | 45.994 |
| 45-50 years | 45.978 |
| 50-55 years | 45.963 |
| 55-60 years | 45.947 |
| 60-70 years | 45.931 |
| 70-80 years | 45.916 |
| 80-90 years | 45.9 |
| 90-100 years | 45.884 |
| >100 years | 45.868 |
*Ideal values are calculated based on our database of patient records
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
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Some examples of conditions that increase or decrease RDW SD levels include:
- Thalassemia, an inherited blood disorder
- Crohn's disease
- Chronic liver disease
- An iron or vitamin deficiency
- Heart disease
If you want your blood test report to be interpreted by RDW SD specialist, 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
Normal FT4 thyroid range : 0.89 - 1.76 ng/dL
| Age | Ideal FT4 thyroid value |
|---|---|
| <5 years | 0.90647 |
| 5-10 years | 0.92324 |
| 10-15 years | 0.94032 |
| 15-20 years | 0.95772 |
| 20-25 years | 0.97544 |
| 25-30 years | 0.99349 |
| 30-35 years | 1.01187 |
| 35-40 years | 1.03059 |
| 40-45 years | 1.04966 |
| 45-50 years | 1.06908 |
| 50-55 years | 1.08886 |
| 55-60 years | 1.109 |
| 60-70 years | 1.12952 |
| 70-80 years | 1.15042 |
| 80-90 years | 1.1717 |
| 90-100 years | 1.19338 |
| >100 years | 1.21546 |
Also Read : Symptoms of High RDW SD
Also Read : Symptoms of High FT4 thyroid
High RDW SD and FT4 thyroid levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 46 fL for RDW SD and more than 1.76 ng/dL for FT4 thyroid, you may also need some follow-up tests that will help detect the underlying disease early.
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How is a blood test performed in the lab?
Depending on the symptoms you are experiencing, your doctor may order a RDW SD and FT4 thyroid test. In most hospitals RDW SD and FT4 thyroid results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.
