What does high Hematocrit and RDW SD mean in blood test?

High Hematocrit and RDW SD can be caused by numerous problems.

High levels of Hematocrit and RDW SD in the blood indicate a variety of health problems. If your blood Hematocrit level is between 40 % to 50 % and the RDW SD level is between 39 % to 46 fL, then your body does not have any underlying health problems. But if Hematocrit and RDW SD levels exceed these levels, you should see a doctor immediately.

Normal Hematocrit range : 40 - 50 %

Age-wise ideal Hematocrit level in blood:

Age	Ideal Hematocrit value
<5 years	42.16
5-10 years	44.437
10-15 years	46.837
15-20 years	49.366
20-25 years	49.222
25-30 years	49.078
30-35 years	48.935
35-40 years	48.792
40-45 years	48.65
45-50 years	48.508
50-55 years	48.366
55-60 years	48.225
60-70 years	48.084
70-80 years	47.944
80-90 years	47.804
90-100 years	47.664
>100 years	47.525

*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 RDW SD range : 39 - 46 fL

Age-wise ideal RDW SD level in blood:

Age	Ideal RDW SD value
<5 years	41.106
5-10 years	43.326
10-15 years	45.666
15-20 years	45.533
20-25 years	45.4
25-30 years	45.268
30-35 years	45.136
35-40 years	45.004
40-45 years	44.873
45-50 years	44.742
50-55 years	44.611
55-60 years	44.481
60-70 years	44.351
70-80 years	44.222
80-90 years	44.093
90-100 years	43.964
>100 years	43.836

High Hematocrit and RDW SD 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 50 % for Hematocrit and more than 46 fL for RDW SD, 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 Hematocrit and RDW SD test. In most hospitals Hematocrit and RDW SD 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.