The Body: The Complete HIV/AIDS Resource
Follow Us Follow Us on Facebook Follow Us on Twitter 
Professionals >> Visit The Body PROThe Body en Espanol
Ask the Experts About

Choosing Your MedsChoosing Your Meds
Rollover images to visit our other forums!
  • Email Email
  • Glossary Glossary

morning versus afternoon results
May 30, 2004

How is a T cell subset and CBC different if blood is taken in the afternoon versus early morning (8am)?

I think that CD4's and Lymphocytes are usually higher in the afternoon? Is that true and is there are general average increase if say one had blood drawn at 8am and then 3 or 4pm?

Does the diurnal increase also relate to white blood cells, red blood cells and hemaglobin and hematocrit or is it just lymphocyte related?

Thank you.

Response from Dr. Young

Thanks for your question.

I don't know the details of this answer, but my understanding is that there is a diurnal (daily) variability to many blood cell counts-- the range and importance of the flucuation varies from test to test. BY

Considering Treatment
parotid cysts

  • Email Email
  • Glossary Glossary



This forum is designed for educational purposes only, and experts are not rendering medical, mental health, legal or other professional advice or services. If you have or suspect you may have a medical, mental health, legal or other problem that requires advice, consult your own caregiver, attorney or other qualified professional.

Experts appearing on this page are independent and are solely responsible for editing and fact-checking their material. Neither nor any advertiser is the publisher or speaker of posted visitors' questions or the experts' material.

Review our complete terms of use and copyright notice.

Powered by ExpertViewpoint