Colorado Pot-Testing Labs Under Review

DENVER (AP) — Colorado requires marijuana to be tested for potency and contaminants but doesn't have a way to make sure that state-licensed testing labs are coming up with the same results.

A bill up for its first test Thursday in a House committee would change that by creating a state "reference library" to try to standardize marijuana tests.

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The bill would also allow private citizens to send homegrown pot for tests. Currently state-licensed testing labs can accept pot only from licensed marijuana producers.

The bill would also allow the labs to test industrial hemp. Currently plants qualify as industrial hemp only if they have very low concentrations of marijuana's intoxicating ingredient, THC. But hemp growers can't currently use the labs to check their crops.