Herbal Supplements and blood testing

Patient : Just a simple question. Are there certain herbal supplements that should be avoided before a blood test? Supplements are: Stinging nettle leaf 435 mg Vitamin C 105 mg garlic 440 mg Mushroom complex 150 mg>>shiitake, maitake, poiria cocos, reishi, agaricus Astragalus root 100 mg oregano leaf 100 mg olive leaf extract 80 mg Passionflower/elderflower/mullein in a tea
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