Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Do labs ever actually determine EBV reactivation? TL;DR I'm tired of being tired.My OBGYN doesn't know what to do with these results but refer me to an MD who is also a Naturopath.I've had daily fatigue and elevated lymphocytes for nearly 3 years. Initially, my PCP sent me to Hematology and now over to my OBGYN. Hematology increased my iron but when fatigue continued for months after, my OB ordered hormone, thyroid, and EBV panels..Hormone and Thyroid resulted in normal values. CBC done in late January: lymphocytes % =50.6, Neutrophils % =37. EBV panel (February): EBV Ab IgM to Capsid U/mL Value <36.00, EBV Ab IgG to Capsid U/mL Value 393.00, EBV Ab IgG to Nuclear Antigen U/mL Value <18.00. NOTE: Suggestive of a recent Epstein-Barr virus infection.No illness between mid 2019 and these results. Not even a cold. Definitely not mono (had that aged 15)Am I wasting my time going to see a naturopathy-focused MD?. ### Response: EBV DNA would be the test that would detect EBV reactivation (that term is probably not a great one, but at the moment Im at a loss for a better one). Its ironically the one doctors check the least often, probably because they dont understand what they are checking for. EBV IgM, if positive, is certainly compatible with recent infection. The IgGs are all variably positive in different patients, to the extent that I place zero value in them. Transplant physicians have a legitimate use for them, but otherwise in my humble opinion they are checked inappropriately > 95% of the time, including in your case.The pretest probability that fatigue in a previously infected patient is due to EBV reactivation is extremely low.Hope that helps. Maybe an ID doc can weigh in better.Regarding seeing a naturopath, I would say if insurance covers the services/treatments they recommend thats a hint they are legit. If its out of pocket to a large extent, Id personally steer clear, but thats an individual decision. Its not medicine, so I really have no authority to judge there.Whats your absolute lymphocyte count?.