Test 
You dream of the big test and something terrible happens - you've forgotten your calculator, you can't find a pencil, or your mind is blank. It happens to everyone at some point in their lives. Dreams of tests and exams are very common because our lives are full of tests in many forms. When we are young and still in school, tests are still the greatest measure of your success.
Dreams of a test which occur leading up to an actual test in school refer to our anxieties about performance. You study and study but until the test is actually over, you won't know if it was a success or your studies had paid off. This kind of absolutist thought leads to great insecurity. It would be better to relax and reflect upon previous success and remember that a single test is not the same as an accumulation of success over a lifetime. Everyone makes mistakes at some point of time.
When there is not a true test coming up in your waking life but you are having test anxiety dreams, this may occur because you are associating stress in your daily life with the same feeling of stress that you had as a child in school. It is likely that you are feeling judged at work or at home. Perhaps this judgement is actually coming from within yourself.
Many test dreams focus on time. You might arrive too late to the exam, or suddenly run out of time, or are caught staring at the clock and time just flies by. This symbolizes our fear of time, and particularly an anxiety that we can never have enough time to prepare completely for life. Life is a process, and there are thousands of hours that could be put into studying various subjects or activities. We can never become experts in everything and we all have an inner fear that we will not accomplish everything we would like before we die. It is important to remember that we are all in the same boat, and that other people actually understand this as well.
Sometimes we have the highest ambitions for ourselves, and much higher expectations for ourselves than others. Most people who have test dreams are actually driven by a strong desire to succeed, and it is unlikely that you will not meet that success.
Testify
To dream that you are testifying signifies validity, or at least something that you accept as the truth.
Testicles
To dream about testicles represents unbridled strength or virility. It might be a reference to concerns about your carnal abilities. It could also mean that you need to be bold in order to get something done.
Pregnancy Test
To dream of taking a pregnancy test may augur a new stage in your life such as a new job or relationship. These changes in your life will test your ability to adapt and act on matters at hand.
Alternatively, your dream may be an actual expression of anxiety, fear, and worry about getting someone pregnant or being pregnant yourself.
Breathalyzer Test
Dreaming that you are taking a Breathalyzer test represents guilt that stems from a bad decision. You were likely not caught or confronted about your poor judgement, but subconsciously you know that you could have been caught and it could have turned out much worse.
Exam
To dream that you are taking an exam indicates your concerns or anxieties that you are not going to fulfill your obligations.
Audition
To dream that you are at an audition suggests that you are uncomfortable with showing others your feelings and emotions. You hold the notion that you are being unfairly scrutinized and assessed. If you pay attention to the actions and words of the spectators, this can help you determine their perceptions of you.
Laboratory
To dream that you are in a laboratory implies that you are trying to discover your spirituality and explore your emotions and characteristics. You may be facing a major change in your life.
Experiment
To dream that you are working on an experiment indicates that you should take more risks and attempt things you haven't done before. Life without risk can be dull.
Ultrasound
To dream of witnessing an ultrasound suggests that you want information about someone that may not be your right to have. You may not be entirely satisfied with the information that you do have and feel the need to know more.
Dreaming that you are receiving an ultrasound is more emotionally significant in that you may be wishing to uncover some insight into your own emotional world. The potential for a positive emotional shift is apparent here.
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