
Know your cut-off levels: 🧪 Urine: 300 ng/ml (longest detection) 💧 Saliva: 20 ng/ml (current use only) 🩸 Blood: 100-150 ng/ml (shortest window) Get the full technical breakdown on cocaine drug testing standards → zoomtesting.co.uk/drug-test-cut-… #WorkplaceSafety
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