AMAS - Anti-malignin antibody screen test is designed to pick up cancers well in advance of other signs and symptoms, months before conventional medical tests can detect it. However, for advanced cancer, if the antimalignin antibody is wiped out, the test won't work. For this, other types of testing is recommended.
No. Swimming immediately after eating isn't dangerous, but it could result in uncomfortable stomach cramps. Parents have long advised children to wait at least 30 minutes after eating before going back into the water. You may have been told that's because swimming with a full stomach can cause severe cramps and lead to drowning. But there's no evidence to support such a warning.
This will give your pool a high chlorine reading and allow the chlorine to oxidize and clean the water. Generally after shocking your pool you should wait to swim at least 8-12 hours until chlorine levels come back to normal (1-3ppm). This is one of the few times that having a high chlorine level is a good thing.