yes.
Any test can be a false negative.
Valerian Root can test positive as benzodiazepines. Ephedra can test positive as an amphetamine.
Methylphenidate (Ritalin) can show false positives for amphetamine or methamphetamine (5 panel test) but Detection time in urine its 3-5 days
no
No
Not quite sure though it does have a ampthemaine type action and structure to a degree so possibly false positive amphetamine.
As they are strong drugs it can affect the pregnancy test.
Adderall contains various amphetamine salts, and thus it gives a positive result for amphetamine(s) (some tests group various other amphetamine drugs, ie methamphetamine together with amphetamine) on a drug test.
Prozac (fluoxetine) is an antidepressant that belongs to the selective serotonin reuptake inhibitor (SSRI) class and is not an amphetamine. However, certain urine drug tests may produce false positives for amphetamines due to the presence of fluoxetine or its metabolites. If a person is prescribed Prozac and a urine test indicates a positive result for amphetamines, further testing, such as a confirmatory test, may be necessary to clarify the results.
No, hydrocodone is an opiod(which it will show up as on most test) and unrelated to amphetamine.
Urinating within hours of the urine or swab test, not using the first urine that comes out, or inadequate swabbing can all cause a false negative chlamydia test. In addition, testing too soon after exposure, or recent exposure to partially effective antibiotics could cause a negative test that would be positive within a couple of more weeks.
i could do .... if your test is a proper test tho i dough it