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Any test can be a false negative.
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∙ 13y ago
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Can urine test for amphetamine be false negative?
yes.
How is pheochromocytoma diagnosed?
If a pheochromocytoma is suspected, urine and/or a blood test are usually recommended. A test called "24-hour urinary catacholamines and metanephrines" will be done.
Can having hyperthyroidism cause a false negative result on a urine test for opiates?
no
Do anti sisure medications cause false negative urine pregnancy test?
As they are strong drugs it can affect the pregnancy test.
What can cause a false negative chlamydia test in males?
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.
How are pheochromocytomas usually treated?
If a pheochromocytoma is suspected, urine and/or a blood test are usually recommended. A test called "24-hour urinary catacholamines and metanephrines" will be done.
Can antihistamines cause false negative pregnancy test?
Promethazine (Phenagren) can cause a false negative.
Can a pregnancy test show a false negative if it is dipped in urine too long using the pee in a cup method?
No. But the result may be fainter. Do another test.
Will lipitor cause a false urine test for amphetamines?
No; Lipitor is not a psychoactive drug and would not cause a false urine test for amphetamines.
Can a pregnancy test show a false negative if it is dipped in urine too long using the 'pee in a cup' method?
Hi, It is possible yes.
Can a positive pregnancy test turn negative?
No , but a negative test can be a false positive .
Can having a BV cause a false negative on a pregnancy test?
BV won't cause a false negative on a pregnancy test.
