After do we get report from hospital , I will update to you ASAP. As your question why result is different please kindly see detail as below.
1. When we checking by ourselves, tester set is using special paper and will can showing possible have addictive substance. And can’t restrict from with drug.
2. As reporting 2 person inform to us, he has to taking medicine for cough drops and aspirin in the morning. Both drug will showing by primary tester from 1st item
3. From 2nd item why do we need to sending 2 persons testing at hospital. Because hospital tester doing by chemical laboratory. And can restrict what drug he has to take.
4. Result from hospital laboratory could not found some chemical for 2 persons is illegal and result is negative.