I've got elevated lymphocytes too, they used to be 38-39% which was all considered normal, then I had a bad bout of herpes, and a month later my lymphocytes were up to 65%, leukocytes 7.2, absolute 4.6. Three months later I retested: lymphocytes 70, leukocytes 10, the GP sent me to retest, retested a week later lymphocytes 48, leukocytes 7.5, absolute 3.6. I went to a haematologist myself, and now they've sent me for lymphocyte immunophenotyping. Panic! And the GPs thought everything was fine. They didn't even pay attention.