I like where you were going with this. If I may, I would like to suggest focusing on one thing may have worked out a bit better. Getting in close to the needle and getting that in perfect focus could be really cool.
Not sure of your intention here, but my first impression is "Drugs" and it's not until looking at the title do I recognize the really blurry thing in the back is the stethoscope and this might actually not be a bad thing. Due to the focus, the balance is weighed extremely heavily in favor of the syringe.
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