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s or causes Clear, colorless normal Milky With WBC increase Pink to yellow With blood Yellow Hyperbilirubinemia Protein≥Green Purulent CSF Brown to Black Meningeal melanoma Transparency ?Normal :Clear, colorless ?Clear or Cloudy: ? Viral Meningitis、 Epidemic Encephalitis B or Syphilis in CNS ?Ground glass opacity: Tuberculous Meningitis ?Milky turbid: Purulent Meningitis Clots and film ?Normal: No clots or film in 24 hours ?Purulent Meningitis :clots observed in 12 hours ?Tuberculous Meningitis :thin film cover after 12—24 hours ?Subarachnoid obstruction:yellow jelly Protein ?Qualitative : Pandy test: /177。 ? Hypochloremia, such as severe vomit、 diarrhea, dehydration Normal Value ? RBC: none ? WBC: ? adult: 0— 8 106/L child: 0—