Un detectable means that something is not detectable or detectable at a very low level. This might be because the substance has been diluted or hidden.
The drug is undetectable at the current level of testing.
The virus is undetectable at the current level of testing.
adjective
barely able to be perceived
Synonyms:
adjective
not easily seen
1
It is possible for the condition to be undetected until adulthood.
2
Postprandial levels should be nearly undetectable.
3
The theft remained undetected until yesterday.
4
At the hospital, the creature climbs along the ceiling, undetected.
5
It went undetected by hiding in the human genome itself.
6
For the case of random undetected errors, this observation is true.
7
It probably went undetected due to the subsequent revert war.
8
Houston had his foot on the ropes, but this was undetected by the referee.
9
The army was concealed there undetected during the Irish War of Independence.
10
It also reduces the risks of errors or fraud occurring and going undetected.