Can promethazine affect pregnancy test?

Some drugs like methadone, chlordiazepoxide, or promethazine can give you a false positive. Urine contaminated with blood or protein can also trigger a false positive. Although very uncommon, it’s still possible to get a false positive because of hCG-producing medical conditions.

What medications cause a false negative pregnancy test?

Medications that could affect your test include benzodiazepines, phenothiazine, promethazine and others.

Can a pregnancy test show a faint line and be negative?

Can a barely visible pregnancy test result be negative? A barely visible pregnancy test result usually can’t be negative — because it detected hCG — but it might indicate a false positive for actual pregnancy or an early pregnancy loss. You can also get a false negative result.

Can promethazine cause false negative pregnancy test?

Drug/Laboratory Test Interactions The following laboratory tests may be affected in patients who are receiving therapy with promethazine hydrochloride. Pregnancy Tests: Diagnostic pregnancy tests based on immunological reactions between HCG and anti-HCG may result in false-negative or false-positive interpretations.

Can medication interfere with pregnancy test results?

Could medications interfere with test results? Fertility drugs or other medications that contain HCG might interfere with home pregnancy test results. However, most medications, including antibiotics and birth control pills, don’t affect the accuracy of home pregnancy tests.

What medications can cause a false positive pregnancy test?

1. Some medications can cause a false positive pregnancy test.

• Some anti-anxiety medications.
• Antipsychotics.
• Some antiseizure drugs.
• Parkinson’s disease medications.
• Diuretics (“water pills”)
• Antihistamines.
• Methadone.
• Antinausea medications.

What can interfere with a pregnancy test?

Home pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in a urine sample. There are a few things that can cause a false negative reading, namely the improper use of the test, testing too early, using an expired test, or diluting the urine by drinking too much water in advance.

Can promethazine cause false positive pregnancy test results?

Promethazine has the potential to interact with immunological pregnancy tests (may give false-positive or false-negative results). It may also give a false negative result with skin tests by inhibiting the cutaneous histamine response — discontinue 72 hours in advance.

Can you have a false negative pregnancy test and be pregnant?

False Negative Test When You’re Actually Pregnant. A false negative pregnancy test is when the test comes up negative, but you are pregnant. The most common reason for a false negative is that you took the test too early. Even if your period is late according to your typical cycle, you may have ovulated later this month.

Will promethazine show up on a drug test with codeine?

Codeine is in promethazine in liquid form. It can be prescribed with or without codeine. It will give a false positive for methamphetamine though because i came up positive for amphetamines and codeine but i had a prescription for promethazine/ codeine syrup like cough medicine Yes it will show up no it does not have codeine in it.

Does promethazine interact with other medications?

Antimuscarinic drugs, tricyclic antidepressants, sedatives, and hypnotics — concomitant use with promethazine enhances the antimuscarinic and/or sedative action of these drugs. Promethazine has the potential to interact with immunological pregnancy tests (may give false-positive or false-negative results).