Blood testing is a common method used to assess health, support disease diagnosis, and monitor treatment progress. Depending on the affected organs and various clinical conditions, patients will be indicated the appropriate type of test by their doctor.
So, what should patients keep in mind before having a blood test to ensure accurate results?
1. Fasting Time and Water Intake
Eating before a blood draw can cause inaccurate results, and depending on the type of test, patients may or may not need to fast, based on the doctor's instructions.
Most biochemical tests (such as blood glucose, blood lipids, liver and kidney function) require patients not to eat anything for 8-12 hours before the blood draw. However, some tests, such as a complete blood count or blood typing, do not require fasting.
Patients may drink a small amount of plain water to avoid dehydration.
Absolutely avoid drinking soft drinks, milk, tea, coffee, or fruit juice.
2. Strenuous Exercise
This can both exhaust the patient and affect the test results.
Keep your mood relaxed, avoid strong emotions, avoid staying up late, and avoid overworking before the test date. Let the body relax so the results accurately reflect your true condition!
3. Stimulants and Foods to Avoid
Do not smoke, and avoid alcoholic beverages, beer, or wine for 24 hours before the blood test.
Avoid foods high in fat, sugar, and iron, and do not eat too much before the test date.
4. Recommended Time for Blood Draws
Morning is often the "golden time" when the body's biological indicators are stable, and it also makes it easier for patients to fast overnight without significantly affecting their health.
Blood testing is an important step in detecting many health issues early, even before symptoms appear. Proper preparation before the test not only saves time and money but also helps doctors make an accurate diagnosis and determine the most appropriate treatment direction.