In interpreting a complete blood count with differential, anytime the neutrophils and lymphocytes are numerically close, it is a viral cause; when the neutrophils and lymphocytes are numerically distant, it is a bacterial cause. This is very helpful in determining treatment. — DONNA CARTER, FNP-C, Scottsburg, Ind. (202-1)



These are letters from practitioners around the country who want to share their clinical problems and successes, observations and pearls with their colleagues. We invite you to participate. If you have a clinical pearl, submit it here.