A test tube stands for experiment — trying something in a small, contained way before trusting it. Tradition reads it as curiosity, and as a situation still being tested rather than settled.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.