What causes high RDW SD and low Phosphorus?

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

If your RDW SD is in between 39 fL and 46 fL and your Phosphorus is in between 2.5 mg/dL and 4.5 mg/dL then you need not worry as these are the normal ranges for RDW SD and Phosphorus 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	39.682
5-10 years	40.376
10-15 years	41.082
15-20 years	41.8
20-25 years	42.531
25-30 years	43.274
30-35 years	44.03
35-40 years	44.8
40-45 years	45.583
45-50 years	45.569
50-55 years	45.556
55-60 years	45.542
60-70 years	45.528
70-80 years	45.514
80-90 years	45.501
90-100 years	45.487
>100 years	45.473

*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 range of Phosphorus : 2.5 - 4.5 mg/dL

Ideal values of Phosphorus depending on age :

Age	Ideal Phosphorus value
<5 years	2.544
5-10 years	2.588
10-15 years	2.633
15-20 years	2.679
20-25 years	2.726
25-30 years	2.774
30-35 years	2.822
35-40 years	2.871
40-45 years	2.921
45-50 years	2.972
50-55 years	3.024
55-60 years	3.077
60-70 years	3.131
70-80 years	3.186
80-90 years	3.242
90-100 years	3.299
>100 years	3.357

High RDW SD and low Phosphorus can be caused by a lot of reasons. If you take RDW SD and Phosphorus blood tests and the results are higher than 46 fL for RDW SD and lower than 2.5 mg/dL for Phosphorus, 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 Phosphorus Tests Are Done :

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