Leptospirosis

my dad did a test for leptospirosis a week after exposure to contaminated water, the result is negative. I have read articles saying that incubation period of the bacteria is up to 3 weeks. Is it possible to become positive even if the first test is negative? 2 or 3 weeks after exposure, my dad got fever, headache, muscle pain, swollen ankle (I dont know if it's because of his gout. his uric acid result is at 420). He said that it is just flu. He had his urine test recently, color: yellow orange. transparency: slightly turbid. reaction: acidic ph 6.0. specific gravity: 1.030. sugar: negative. albumin: trace. RBC: 4-6/HPF. PUS CELL: 1-3/HPF. CAST: NONE FOUND. crystals: amorphous urates few. epithelial cells: rare. mucous threads: +++. bacteria: rare. Can this urine test result determine if he has leptospirosis?? Can this urine test result determine of his kidney is fine? What does 4-6 /hpf mean? thank you very much for your answer.

Hi, the clinical feature of your father is suspicious. Leptospirosis may sometimes present with fever and muscle pain. There is RBC in the urine which is also abnormal. I suggest you to repeat the antibody and urine test. And don't bother to visit a doctor if the fever worsen. Thanks ...

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