No, methamphetamine use is not known to affect the accuracy of a pregnancy test. Pregnancy tests work by detecting the presence of the hormone human chorionic gonadotropin (hCG) in urine or blood, which is produced by the placenta after a fertilized egg implants in the uterus.

Methamphetamine use is not known to affect the levels of hCG in the body, and therefore is not likely to affect the results of a pregnancy test. However, it is important to note that methamphetamine use during pregnancy can have serious negative effects on both the mother and the developing fetus.

Methamphetamine use during pregnancy can lead to complications such as preterm labor, low birth weight, and developmental delays in the infant. Additionally, methamphetamine use during pregnancy can increase the risk of maternal complications such as hypertension, seizures, and placental abruption.

Therefore, it is important to seek medical attention if you suspect that you may be pregnant and are using methamphetamine. Your healthcare provider can provide guidance on how to manage your methamphetamine use and provide resources and support to help you have a healthy pregnancy.