For many Australians, having blood drawn is a routine part of staying on top of their health. But that does not mean it is always comfortable. Whether you are dealing with tricky veins, a fear of needles, or simply want to avoid that post-draw bruise, there are practical steps you can take to make the experience smoother. This guide covers everything from preparation and hydration to managing anxiety and aftercare — based on guidance from Australian pathology providers and health authorities.
Why blood tests matter for preventative health
Blood tests are one of the most accessible and informative tools in preventative health. A single blood draw can reveal information about your metabolic health, organ function, nutrient status, hormone levels, and disease risk markers. Routine blood testing is recommended by the RACGP as part of general preventive health assessments for Australian adults, and tests like fasting glucose, lipid panels, and full blood counts are among the most commonly ordered pathology tests in Australia [1]. The challenge is that many people delay or avoid blood tests altogether — not because they do not see the value, but because the experience itself feels uncomfortable. An international survey published in PLOS ONE (Alsbrooks & Hoerauf, 2022) found that 52.2% of people with needle-related fear reported avoiding blood draws [2]. That is a significant proportion of the population missing out on valuable health data because of a barrier that, in most cases, can be managed with the right preparation. The good news is that the blood draw itself is quick — typically under five minutes — and there are straightforward steps you can take before, during, and after the procedure to make it as easy as possible.
Preparing the day before your blood test
Good preparation starts the day before your appointment, not the morning of. The single most impactful thing you can do is hydrate well. Australian Red Cross Lifeblood recommends drinking plenty of fluids the day before a blood draw — at least 8 to 10 glasses of water throughout the day [3]. Well-hydrated veins are plumper and closer to the surface of the skin, which makes them significantly easier for the phlebotomist to locate and access. If your blood test requires fasting, plan your last meal for the evening before. Choose a balanced meal with protein, healthy fats, and complex carbohydrates — this will help you feel satisfied overnight and reduce morning hunger. Australian pathology providers generally recommend a fasting period of 10 to 12 hours for tests that require it [4][5]. Importantly, you should avoid alcohol for at least 24 hours before your blood test, as alcohol can affect liver function markers, triglycerides, and other results [4]. Get a reasonable night's sleep. Fatigue can lower your pain threshold and increase anxiety, making the experience feel worse than it needs to. If you tend to feel faint during blood draws, being well-rested helps your body regulate blood pressure more effectively.
Fasting: what you need to know
Not all blood tests require fasting — in fact, most do not. The tests that typically require fasting are fasting glucose, lipid panels (including triglycerides and cholesterol), and fasting insulin [5]. Tests such as a full blood count, liver function, kidney function, thyroid function, and HbA1c generally do not require fasting [6]. When fasting is required, the standard recommendation from Australian pathology providers is 10 to 12 hours without food or caloric drinks [4][5]. The most practical approach is to finish dinner the evening before and book your blood test for first thing in the morning — most pathology collection centres open between 7am and 8am. During a fast, you can and should drink water. Healthdirect Australia confirms that plain water is permitted during a fasting period, but tea, coffee, cordial, soft drinks, and milk are not [5]. Australian Clinical Labs notes that drinking water may help reduce the risk of fainting and assists the collector in locating veins [4]. Avoid chewing gum (even sugar-free) as this can stimulate digestive enzymes and affect results. If you take regular medications, continue taking them with water unless your healthcare provider has specifically advised otherwise [5]. If you have diabetes and take blood-sugar-lowering medication, speak to your GP before fasting — combining these medications with an extended fast can increase the risk of hypoglycaemia.
What to wear and bring
Clothing matters more than you might think. Blood is almost always drawn from a vein in the inner elbow area (the antecubital fossa), so wear a top with sleeves that can be easily rolled up above your elbow. Tight long sleeves, fitted jumpers, or layers that bunch up around the upper arm can restrict blood flow and make the phlebotomist's job harder — and your experience less comfortable. Bring your pathology request form (the one your GP or healthcare provider issued) and your Medicare card. Some pathology centres now accept digital request forms, but it is worth checking in advance. If you are prone to feeling faint, bring a small snack and a bottle of water to have immediately after the draw. If you have had a difficult blood draw in the past — for example, if the phlebotomist had trouble finding a vein or had to try multiple times — make a note of which arm and which vein worked best. This information is genuinely useful for the phlebotomist and can save time and discomfort.
Hydration on the morning of your test
Even if you have hydrated well the day before, topping up on the morning of your test makes a real difference. Australian Red Cross Lifeblood recommends drinking at least 750 mL of fluids (roughly three large glasses) in the three hours before a blood draw [3]. This applies whether or not you are fasting — water is always permitted. Hydration directly affects how easy it is to draw your blood. When you are dehydrated, your blood volume decreases and your veins become smaller and less visible. This can lead to multiple needle attempts, longer draw times, and a higher chance of bruising. Conversely, well-hydrated veins are fuller, more prominent, and easier to access on the first attempt. If you find it hard to drink a large volume of water first thing in the morning, start sipping from when you wake up and continue on the way to your appointment. Warm water can be easier to drink in larger quantities than cold water, and warmth also helps dilate your blood vessels — a double benefit.
Managing needle anxiety and phobia
If the thought of a blood draw makes you anxious, you are far from alone. NSW Health Pathology reports that as many as 1 in 4 adults have strong fears around needles [7]. An international survey found that among people with needle phobia, general anxiety (96.1%) and fear of pain (95.5%) were the most commonly reported causes (Alsbrooks & Hoerauf, 2022) [2]. In Australia, it is estimated that 1 in 5 people have a fear of needles, and approximately 20% of those individuals will avoid needle procedures altogether [8]. The first step is to tell the pathology staff. Phlebotomists are trained to work with anxious patients and can adjust their approach — they may use a smaller gauge needle, position you lying down rather than sitting up, or simply take extra time to help you feel settled. Healthdirect Australia specifically recommends speaking to your pathology collector about your fear so they can make accommodations [6]. Evidence-based strategies that can help during the draw include: - **Distraction**: Look away from the needle. Bring headphones and listen to music, a podcast, or an audiobook. The international survey found that distraction was the most effective non-device strategy, selected by 92.1% of respondents and ranked as the single most helpful approach by 35.9% [2]. - **Controlled breathing**: Slow, deep breaths activate your parasympathetic nervous system and reduce the fight-or-flight response. Breathe in for four counts, hold for four, and exhale for six. - **Applied tension**: If you are prone to fainting during blood draws (a vasovagal response), the applied tension technique can help. Tense the muscles in your legs, arms, and torso for 10 to 15 seconds, release, and repeat. This raises your blood pressure and reduces the likelihood of fainting. - **Choose your position**: Ask to lie down if sitting up makes you feel faint. Most pathology centres have beds available for this purpose. If needle anxiety is significantly affecting your health — for example, if you have been avoiding blood tests, vaccinations, or medical procedures — speak to your GP about a referral to a psychologist. Cognitive behavioural therapy (CBT) has strong evidence for treating specific phobias, including needle phobia [8].
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Start Testing TodayWhat to expect during the blood draw
Understanding what happens during the procedure can help reduce anxiety. The entire process usually takes less than five minutes from start to finish. The phlebotomist will ask you to sit in a chair (or lie on a bed if you prefer) and will examine the veins in both arms to find the best one. They will tie a tourniquet — a flat elastic band — around your upper arm to temporarily increase blood flow to the veins below. You may be asked to make a fist to help your veins become more prominent [9]. The phlebotomist will clean the injection site with an antiseptic wipe to reduce infection risk, then insert a small needle into the vein. You will feel a brief sting or pinch — most people describe it as less painful than they expected. Once the needle is in place, blood flows into one or more small collection tubes. The number of tubes depends on how many tests have been ordered, but even multiple tubes only take a minute or two to fill. When the collection is complete, the phlebotomist removes the needle and applies pressure to the site with a cotton ball or gauze pad. They will ask you to continue applying firm pressure for a few minutes, then secure it with a bandage or adhesive strip. The draw is done.
How to avoid bruising after your blood draw
Minor bruising after a blood draw is common — Australian Red Cross Lifeblood notes that it affects more than 1 in 10 people who have blood taken [10]. However, there are several things you can do to reduce the risk. The most important step is to apply firm, consistent pressure to the puncture site for at least two to three minutes immediately after the needle is removed. Do not bend your arm at the elbow — this feels intuitive but actually reduces the effectiveness of pressure on the vein. Instead, keep your arm straight and press firmly with your other hand. Lifeblood recommends keeping the bandage on for at least two hours after the draw [3]. For the rest of the day, avoid heavy lifting or vigorous exercise with the arm that was used for the blood draw. Strenuous activity increases blood pressure in the arm, which can cause a sealed puncture site to reopen and bleed into the surrounding tissue — resulting in a bruise. If a bruise does develop, apply a cold pack wrapped in a clean cloth for 15 minutes at a time, three to four times in the first 24 to 48 hours [3]. After 48 hours, switch to a warm compress to help your body reabsorb the bruise. Paracetamol can be used for discomfort, but avoid aspirin and ibuprofen as these can thin the blood and make bruising worse [3]. Some factors increase your likelihood of bruising regardless of technique — including taking blood-thinning medications (such as warfarin or aspirin), having naturally fragile veins, or being older. If you bruise easily, let the phlebotomist know beforehand so they can take extra care.
Tips from phlebotomists: what the experts recommend
Phlebotomists draw blood dozens of times a day, and they consistently see the same factors that make the experience easier or harder for patients. Based on guidance from Australian pathology providers and health authorities, here are their top recommendations: - **Hydrate, hydrate, hydrate**: This comes up more than any other tip. Drinking plenty of water in the 24 hours before your appointment is the single most effective thing you can do to make your veins accessible [3][4]. - **Stay warm**: Cold weather causes vasoconstriction — your blood vessels narrow, making veins harder to find. If it is a cold morning, wear warm clothing and consider holding a warm drink (even just warm water) on the way to your appointment. Some patients find it helpful to apply a warm compress to the inside of their elbow for a few minutes before the draw [6]. - **Move before your appointment**: A short walk before you arrive gets your blood circulating and makes veins more prominent. Healthdirect recommends taking a brief walk to improve circulation before a blood test [6]. - **Do not look at the needle**: Looking away is one of the simplest and most effective ways to reduce anxiety and perceived pain. Focus on something across the room, listen to music, or chat with the phlebotomist. - **Tell the collector about past difficulties**: If one arm consistently works better than the other, or if you have a specific vein that is usually successful, share this information. It saves time and reduces the chance of multiple attempts. - **Breathe normally**: Holding your breath tenses your muscles and can make the draw more uncomfortable. Slow, steady breathing keeps you relaxed. - **Eat afterwards**: If you have been fasting, eat a snack as soon as the draw is done. Bring something with you so you do not need to wait.
When to expect your results
Most common blood test results are available within one to two business days, according to Healthdirect Australia [6]. Some more specialised tests — such as certain hormone panels, allergy testing, or genetic markers — may take longer, sometimes up to a week or more. Your pathology provider will send the results directly to the healthcare provider who ordered the tests. If your tests were ordered by a GP, you will typically need to book a follow-up appointment to discuss your results. Some pathology providers also offer online patient portals where you can view your results directly. With Listen Health, your results are delivered through the app with clear, plain-language explanations of what each biomarker means and where your levels sit relative to optimal ranges. Over time, the app tracks your results year on year, helping you spot trends and patterns in your health data — from ferritin and fasting glucose to triglycerides and cortisol.
Making blood tests a regular habit
The more regularly you have blood tests, the more comfortable the process becomes — and the more valuable the data. A single blood test gives you a snapshot of your health at one point in time. Annual testing gives you a trend, and trends are where the real insights live. Tracking biomarkers like ferritin, fasting glucose, triglycerides, cortisol, and your full blood count over multiple years allows you and your healthcare provider to identify changes early — often before symptoms appear. This is the foundation of preventative health: using data to stay ahead of problems rather than reacting to them after the fact. If the blood draw itself has been a barrier for you, the tips in this guide should help make it more manageable. And remember — the discomfort of a few seconds of a needle is a small price for the peace of mind that comes from knowing your health numbers.
Key Takeaways
- Hydrate well in the 24 hours before your blood draw — this is the single most effective way to make your veins easier to access.
- Fasting is only required for specific tests (fasting glucose, lipid panel, fasting insulin). Most blood tests do not require fasting.
- When fasting, drink plain water freely — it is permitted and encouraged by Australian pathology providers.
- Wear clothing with sleeves that roll up easily above the elbow.
- Needle anxiety affects up to 1 in 4 Australian adults. Tell the pathology staff if you are nervous — they are trained to help.
- Apply firm pressure for at least two to three minutes after the draw and avoid heavy lifting to reduce bruising.
- Most blood test results are available within one to two business days.
Frequently Asked Questions
AHPRA Disclaimer: This information is general in nature and should not replace individual medical advice. Always discuss your test results and health concerns with a registered healthcare practitioner.
References
- Royal Australian College of General Practitioners (RACGP). Guidelines for Preventive Activities in General Practice (Red Book), 10th edition. East Melbourne: RACGP, 2024.
- Alsbrooks K, Hoerauf K. Prevalence, causes, impacts, and management of needle phobia: An international survey of a general adult population. PLOS ONE. 2022;17(11):e0276814.
- Australian Red Cross Lifeblood. Prepare and aftercare. Lifeblood, 2025.
- Australian Clinical Labs (ACL). General Fasting Information — Patient Test Instructions. ACL, 2025.
- Healthdirect Australia. Fasting for medical tests. Healthdirect, 2025.
- Healthdirect Australia. Guide to blood testing. Healthdirect, 2025.
- NSW Health Pathology. Are you anxious about needles and getting a pathology test? NSW Health, 2025.
- Mind Up Psychology. Needle fear: When a simple jab becomes a barrier to health. Mind Up, Spotswood, Victoria, 2025.
- Better Health Channel. Blood and pathology tests. Victorian Department of Health, 2025.
- Australian Red Cross Lifeblood. Know the risks. Lifeblood, 2025.