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Smoking before a blood test can affect your test results. Some blood tests require you to fast for several hours beforehand, usually about 8-12 hours before the blood sample is collected. Of course, you shouldn’t eat or drink anything during that fasting period.
18 Ιουλ 2023 · Here's what you need to know about fasting before a blood test, including how long to fast for and if you can drink coffee.
Fasting means nothing to eat or drink (except water) for 10–16 hours before your blood test. The optimum time for fasting is 12hrs. (i.e. eat at 8pm for an 8am test) During your fasting period: water, but it must not contain additive. Do not eat chewing gum, lollies, or jellies. Do not smoke during the fasting period. ctor advises ot.
Do not drink tea, coffee, or fizzy drinks (for example cola) on the morning of your test. This includes black coffee and sugar-free (diet) drinks. Do not chew gum or smoke on the morning of your test. This includes vaping and using nicotine patches.
15 Ιουλ 2024 · Smoking: Smoking may also affect blood test results. If a person has been asked to fast before a blood test, they should refrain from smoking.
29 Ιουλ 2024 · What are the rules for fasting for a blood test? Avoid any food or drinks, alcohol, smoking, chewing gum, exercising, and some supplements and medications for 8 to 12 hours before your test.
The optimum time for fasting is 12hrs (i.e. eat a snack or meal at 8pm for an 8am test) During your fasting period you: May drink plain water, but it must not contain additives (No tea, coffee or cordials). May not eat chewing gum, lollies, or jellies. Do not smoke during the fasting period.
