No, an employer may accept a negative/dilute test result as a negative test. If the employer wants a retest it may do so, however, it must be stated in the employer's policy and the employer must require a retest of all individuals that have a negative/dilute result in the same testing category.
Alcohol affects activity of such neurotransmitters as glutamate, GABA, and dopamine; caffeine blocks the action of the neurotransmitter adenosine. Such changes are studied in the field of psychopharamacology, which concerns the effects of drugs on the mind and brain. This field investigates both recreational drugs such as alcohol, caffeine, marijuana, cocaine, and LSD, and therapeutic drugs such as antidepressants and antipsychotics.
This is one of the psychological effects of drug addiction involved in craving of the drug. Craving is an effect of drug addiction whereby the addict is obsessed with obtaining and using the drug, to the exclusion of all else.One of the psychological effects of addiction involved in craving is the belief the addict cannot function or handle life without use of the drug.Other psychological effects of drug addiction include: 3. 1  Wild mood swings, depression, anxiety, paranoia, violence.sychological Effects of Drug Addiction. The psychological effects of drug addiction come from the reason the user is addicted to drugs, as well as the changes that take place in the brain once a person becomes a drug addict.