The antonyms of the phrase "laboratory manuals PT" could be numerous, depending on the context. Some possible opposite words for "laboratory" could be non-laboratory, non-scientific, or non-experimental. Similarly, some antonyms for "manuals" may include automated, digital, or virtual. PT, in this case, stands for "physical therapy," which means that some antonyms for this term could be non-physical or non-therapy-related. Therefore, the opposite of "laboratory manuals PT" may vary depending on what aspect one is referring to, but the aforementioned antonyms provide some insight into the possible contrasting terms.