Interpretation of Opiate Urine Drug Screens. Summary. Urine drug testing is highly reliable, but false positives can rarely occur for some drugs. As always, clinical judgment is necessary when interpreting test results. The length of time a drug can be detected in the urine varies due to several factors,
Mood changes during pregnancy can be caused by physical stresses, fatigue, changes in your metabolism, or by the hormones estrogen and progesterone.Significant changes in your hormone levels can affect your level of neurotransmitters, which are brain chemicals that regulate mood.ood swings are mostly experienced during the first trimester between 6 to 10 weeks and then again in the third trimester as your body prepares for birth.
During the first trimester, your body experiences a surge of hormones and an increase in blood volume. These two changes can cause more frequent headaches. These headaches may be further aggravated by stress, poor posture or changes in your vision. Other causes of headaches during pregnancy may involve one or more of the following: Lack of sleep. Low blood sugar.