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Can you test negative after opiates then positive weeks later without using?
Wiki User
∙ 11y ago
Depends on what kind of drug test. Drugs stay in hair a lot longer than urine and sweat. So you could potentially pass urine test then fail hair test weeks later without using. All opiates should be out of urine in 2-5 days though.
Wiki User
∙ 11y ago
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Can a positive Australia antigen test change into negative?
yes. if you are having acute hepatitis with Australia antigen positive it can later become negative.
Is it possible to test negative for marijuana and them positive a few minutes later?
no
Can a varicella titer be positive then a few years later be negative?
Yes, it's possible that varicella titer is positive, and then negative. The CDC does not recommend revaccination in this case.
Can HIV positive later become HIV negative?
Only if the first HIV test was false positive can the test results change.
Why there is always a assumption for a unit positive charge but no negative charge?
First scientists came to know about positive charge later about negative charge so almost all the definitions are written using positive charge and is still continuing..
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Yes, once you are pregnant your hormones rise rapidly, a test may be negative ONE day and positive the NEXT.
My wife had a positive pregnancy test Then two weeks later we took another It was negative Then another negative Now she hasn't had her period for three months?
I'd suspect that she's actually pregnate and tat the negative readings were false.
What does it mean when it says hepatitis B is none conclusive?
It means that the test could not tell if you are positive or negative. You may have to redo the test later.
Can pregnancy test be negative one day and be positive two days later?
Yes. It is always better to go an consult a doctor if you are in doubt.
What is a positive reinforcer?
I edit this as you are incorrect with Negative reinforcement StarGaizer42, Negative Reinforcement IS when you remove a stimulus or consequence to encourage good behavior. i.e. If you do this now(good thing), you wont have to do that later (bad thing)
Could a negative pregnancy text really be positive?
Depends on how soon you took the test. If you took it before missing your first period, yes it could be positive later. IF not, most likely you aren't pregnant.
First pregnancy test was positive and 1 week later it was negative and your period came?
You are most probably not pregnant. even though you may have been.
