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Results 1 - 10 of 10 for CAFFEINE OR NICOTINE OR PHENYLALANINE OR TRYPTOPHAN OR TYROSINE
  1. Doppler Ultrasound: MedlinePlus Medical Test 
    ... test. Stop smoking or using products that have nicotine for two hours or more before your test. Nicotine causes blood vessels to narrow, which could change ...
    https://medlineplus.gov/lab-tests/doppler-ultrasound - Medical Tests
  2. Autonomic Testing: MedlinePlus Medical Test 
    ... preparations: Don't eat or drink anything with caffeine for eight hours before your test. Keep well ...
    https://medlineplus.gov/lab-tests/autonomic-testing - Medical Tests
  3. Catecholamine Tests: MedlinePlus Medical Test 
    ... epinephrine can be affected by stress, vigorous exercise, caffeine, smoking, and alcohol. If you have questions about ...
    https://medlineplus.gov/lab-tests/catecholamine-tests - Medical Tests
  4. Cold Stimulation Test: MedlinePlus Medical Test 
    ... Getting regular exercise , which increases blood flow Limiting caffeine and alcohol Avoiding stress These changes should be ...
    https://medlineplus.gov/lab-tests/cold-stimulation-test - Medical Tests
  5. Panic Disorder Test: MedlinePlus Medical Test 
    ... panic attacks. These may include avoiding alcohol, reducing caffeine, eating regular meals, and getting enough sleep and ...
    https://medlineplus.gov/lab-tests/panic-disorder-test - Medical Tests
  6. Phenylketonuria (PKU) Screening: MedlinePlus Medical Test 
    ... from breaking down part of a protein called phenylalanine (Phe). Phe is in all foods that contain ...
    https://medlineplus.gov/lab-tests/phenylketonuria-pku-screening - Medical Tests
  7. Prealbumin Blood Test: MedlinePlus Medical Test 
    ... names: thyroxine binding prealbumin, PA, transthyretin test, transthyretin, tryptophan-rich prealbumin What is it used for? A ...
    https://medlineplus.gov/lab-tests/prealbumin-blood-test - Medical Tests
  8. Lung Function Tests: MedlinePlus Medical Test 
    ... Smoking Drinking alcohol Drinking or eating products with caffeine, such as coffee, colas, and chocolate If you ...
    https://medlineplus.gov/lab-tests/lung-function-tests - Medical Tests
  9. Sleep Study: MedlinePlus Medical Test 
    ... prepare for your sleep study: Avoid alcohol and caffeine during the afternoon and evening before your test. ...
    https://medlineplus.gov/lab-tests/sleep-study - Medical Tests
  10. Stress Tests: MedlinePlus Medical Test 
    ... test. You may need to avoid drinks with caffeine, such as coffee, tea, and colas, for a ...
    https://medlineplus.gov/lab-tests/stress-tests - Medical Tests