Hello, I have two cats. One just tested positive for FIV, and the other just tested negative. Both cats have another appointment for a second opinion, but I am concerned in the meantime whether one or the other has a false positive or false negative because the narrative does not make sense as the indoor cat tested positive and outdoor cat negative. More info below. Any insight is greatly appreciated! Thank you!
Is a false pos or a false neg more common?
Cat #1 - 4 years old
Cat #2 - 11 years old
Cat #1 that does not go outside, and has not fought with any other cats (besides other house cat) tests positive
Cat #2 that does go outside and fights outdoor cats tests negative
Both cats have “chronic” issues
Positive cat - respiratory illness (presents as asthma / coughing fits 2-6x daily) — currently presumed respiratory infection, and being treated with antibiotics
Negative cat - skin issues (itching, hair loss), frequent vomiting — previously presumed food or environmental allergy
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