Hi @marvkw Welcome to Mayo Clinic Connect. This is a great forum for information but since we’re not medical professionals we can’t diagnose or offer treatments. The best person to answer your questions about blood conditions is your hematologist. They specialize in blood disorders.

I did take a look at the meds you’re on and see that one of your meds is levothyroxin which is a drug used to treat hypothyroidism. Low thyroid function has been associated with lower white blood counts, particularly neutrophils. Lower WBC can also be an indicator of autoimmune diseases such as rheumatoid arthritis, a lack of Vitamin B-12, alcohol consumption or a viral infection are causes. Certain medications can also be a factor.

I’ve posted some good reading material for you. The first two links are for Mayo Clinic’s informational articles on low white blood counts. I know the second article relates to a person asking about taking birthcontrol with a low wbc, which I’m pretty sure isn’t something you’re worried about. 😀 However, continue on with the article because it contains some really good info about low wbc.
https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-what-causes-low-white-blood-cell-count/
https://www.mayoclinic.org/symptoms/low-white-blood-cell-count/basics/causes/sym-20050615
This article I found interesting about the correlation between wbc and low thyroid issues.
https://www.whitelotusclinic.ca/lwhite-blood-cell/
Were all your other blood counts normal? What did the hematologist feel was the cause?