"Human saliva usually has pH value of somewhere between 6.2 & 7.6 Anything below 6.5 will trigger a positive reading on most lateral flow tests, which is why coffee cola & fruit juice etc all produce positive results."
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"Human saliva usually has pH value of somewhere between 6.2 & 7.6 Anything below 6.5 will trigger a positive reading on most lateral flow tests, which is why coffee cola & fruit juice etc all produce positive results."