Here’s a fun puzzle. A lab tests a blood sample and gets a precise number. The equipment is calibrated, the analyst is careful, and the result is correct. And yet that number might still not tell the full story. How is that possible?
The answer comes down to timing. A blood test measures the alcohol in a sample at the moment it was drawn. A DUI case, though, usually cares about something else entirely, the person’s alcohol level while they were actually driving. That’s a big difference.
Those two moments can be an hour or more apart. And alcohol levels don’t sit still. They rise, peak, and fall over time, which means a perfectly accurate lab result can still leave real questions about what was happening earlier on the road.
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