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A 34-year-old member asked:

Can you have infection that does not show up in complete blood count?

3 doctor answers7 doctors weighed in
Dr. Ron Eaker
Specializes in Obstetrics and Gynecology
Yes: An elevated white blood cell count is a marker for an infection, however an infection can occur in the body and someone can still have a normal blood count.
Dr. Margot Watson
Gynecology 54 years experience
Yes: A complete blood count only measures your number and type of white blood cells and red blood cells and platelets. A high white blood cell count can indicate an infection of some kind, but can never be used to tell what type of infection someone has.
Dr. Arthur Heller
Gastroenterology 43 years experience
Sure: Most bacterial infections will have an increase in WBC number, and type (segmented cells, pmns); sometimes may have either not both. Some viral infections have increase in lymphocytes, even with a low WBC count. Docs treat people, not lab tests-those are only part of the picture.

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A 33-year-old member asked:

How does a complete blood count show a possible infection?

2 doctor answers3 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Elevated neutrophil: Count. The total white blood cell/leukocyte count (TLC) and especially neutrophil/granulocyte count is usually elevated in patients with bacterial infections. Viral infections and whooping cough are associated with increase in lymphocyte count. Not all infections produce discernible changes in cbc.
A 43-year-old member asked:

What all can a complete blood count show?

1 doctor answer2 doctors weighed in
Dr. Robert Dyson
Obstetrics and Gynecology 44 years experience
Anemia, infection,: The blood count is useful to test for anemia, infection, indications of vitamin deficiency (b-12 and folate) and inherited abnormal hemoglobin. It can sometimes give a clue to leukemias and lymphomas, allergies and a few other things.
Bolingbrook, IL
A 67-year-old male asked:

Can a complete blood count detect the coronavirus infection and how is would it be determined?

2 doctor answers2 doctors weighed in
Dr. Yvette Kratzberg
Pediatrics 24 years experience
No: A complete blood count (CBC) is used to detect a wide range of disorders, including anemia, infection and leukemia. This test measures several components of your blood: Red blood cells (carry oxygen) White blood cells (fight infection) Hemoglobin (oxygen-carrying protein in red blood cells) Hematocrit (proportion of red blood cells to plasma) Platelets (blood clotting) None of them measures Covid
A 42-year-old member asked:

What does a complete blood count detect?

1 doctor answer1 doctor weighed in
Dr. Barbara Burch
Pathology 28 years experience
Wbcs, Rbcs, and plts: The complete blood count measures the number and types of white blood cells ( these fight infection). Red blood cells, hemoglobin, and hematocrit measure the availability of the cells which carry oxygen. Platelets are also measured. These are the elements that are involved in blood clotting.
A 33-year-old member asked:

What does a complete blood count pick up?

1 doctor answer7 doctors weighed in
Dr. Walter Kobasa
Obstetrics and Gynecology 37 years experience
Many things: It can shows signs of infection from thwe white blood cell account. Anemia and posible causes by the hematocrit and hemoglobin. Abnormalities of the platelets also can be used to help diagnose problem. The CBC is a good starting point to start your diagnosis of problems.

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Last updated Apr 17, 2020
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