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What Does Low CD 8 And CD3 Abs Lymphocytes Mean?

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Posted on Sat, 28 Jun 2014
Question: What does low CD 8 and CD3 abs lymphocytes mean? I was being teated for mold exposure. They were both a couple points below normal as was lymphocytes.
doctor
Answered by Dr. Luchuo Engelbert Bain (2 hours later)
Brief Answer:
CD8/CD3 ratios most important for diagnosis.

Detailed Answer:
Hi and thanks for the query,

CD8 and CD3 lymphocytes are specific cells of the immune system. They vary differently with various types of infectious. These cells are particularly important when one is investigating specific fungal or mold exposures.

What is most important is not the absolute values of these cells, but the ratio of the CD8 to the CD3 cells, otherwise called the CD8/CD3 ratio.

A low CD8/CD3 ratio is very supportive of a mold infection, generally as is the case with mycosis fungoides. When this ratio is less than 25%, it is very suggestive of mold infection or exposure.

Your clinician is very conscious of this and this could explain the reason for prescribing the test. The results however cannot be interpreted independently from specific clinical realities that you present with.

Thanks and kind regards. Please, do feel free asking further questions in case of need.

Dr Bain
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
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Follow up: Dr. Luchuo Engelbert Bain (2 hours later)
Do you mean the ratio of the cb abs, or the lymphocyte population?
doctor
Answered by Dr. Luchuo Engelbert Bain (10 hours later)
Brief Answer:
CD8/CD3 cell count ratio.

Detailed Answer:
Hi and thanks for the update.

I am in fact talking of CD8 cells and CD3 cells, both lymphocytes. In some situations, anti bodies called anti CD8 and anti CD3 antibodies could be measured. In this case, its mainly the ratio of the respective cell populations that is informative to suggest fungal or mold infections.

With a ratio of .25 or less, a mold infection should be strongly suspected. Kind regards

Dr Bain

Note: Do you have more questions on diagnosis or treatment of blood disorders? Ask An Expert/ Specialist Now

Above answer was peer-reviewed by : Dr. Raju A.T
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Answered by
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Dr. Luchuo Engelbert Bain

General & Family Physician

Practicing since :2009

Answered : 3092 Questions

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What Does Low CD 8 And CD3 Abs Lymphocytes Mean?

Brief Answer: CD8/CD3 ratios most important for diagnosis. Detailed Answer: Hi and thanks for the query, CD8 and CD3 lymphocytes are specific cells of the immune system. They vary differently with various types of infectious. These cells are particularly important when one is investigating specific fungal or mold exposures. What is most important is not the absolute values of these cells, but the ratio of the CD8 to the CD3 cells, otherwise called the CD8/CD3 ratio. A low CD8/CD3 ratio is very supportive of a mold infection, generally as is the case with mycosis fungoides. When this ratio is less than 25%, it is very suggestive of mold infection or exposure. Your clinician is very conscious of this and this could explain the reason for prescribing the test. The results however cannot be interpreted independently from specific clinical realities that you present with. Thanks and kind regards. Please, do feel free asking further questions in case of need. Dr Bain