Is WBC 13.3 high, normal or dangerous? What does White blood cell count level 13.3 mean?

📅 Medical Review Date: September 14, 2025

Your WBC level of 13.3 is a High WBC level.

High WBC levels may indicate underlying health problems. The normal range is typically between 4 thou/uL and 11 thou/uL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal WBC range for men is :4 - 11 thou/uL

Ideal values of WBC depending on age (male) :

Age	Ideal WBC value
<5 years	4.053
5-10 years	4.107
10-15 years	4.162
15-20 years	4.217
20-25 years	4.273
25-30 years	4.33
30-35 years	4.388
35-40 years	4.446
40-45 years	4.505
45-50 years	4.565
50-55 years	4.626
55-60 years	4.688
60-70 years	4.75
70-80 years	4.813
80-90 years	4.877
90-100 years	4.942
>100 years	5.008

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

Get Advice via Email : Send us your blood test report, and our WBC experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides WBC, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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Some examples of conditions that increase or decrease WBC levels include:

• Infections, most commonly caused by bacteria and some viruses, less commonly by fungi or parasites
• Bone marrow damage
• Overwhelming infections (e.g., sepsis)
• Inflammation or inflammatory conditions such as vasculitis or inflammatory bowel disease
• Myelodysplastic syndrome

Receive world-class medical opinion about your high WBC levels over email.Upload blood test report now

Normal range of WBC found among women :4-11 thou/uL

Ideal values of WBC depending on age (female) :

Age	Ideal WBC value
<5 years	4.055
5-10 years	4.111
10-15 years	4.167
15-20 years	4.224
20-25 years	4.282
25-30 years	4.341
30-35 years	4.4
35-40 years	4.46
40-45 years	4.521
45-50 years	4.583
50-55 years	4.646
55-60 years	4.71
60-70 years	4.775
70-80 years	4.84
80-90 years	4.906
90-100 years	4.973
>100 years	5.041

If you take a WBC blood test and the results are not in the normal range (4-11 thou/uL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the WBC Test Is Done :

When your doctor orders a WBC test, it involves a straightforward blood draw to measure your WBC levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your WBC test results are usually available within a few hours.

Medical References

• MedlinePlus – White Blood Count (WBC)
• Cleveland Clinic – White Blood Cells: Types, Function & Normal Ranges
• MedlinePlus – Blood Count Tests