You can order blood work through your regular doctor, a telehealth service, or directly from a lab company without a doctor’s visit at all. The path you choose depends on what tests you need, whether you want insurance to cover the cost, and which state you live in. Here’s how each option works and what to know before you go.
Through Your Doctor or a Telehealth Visit
The most traditional route is asking your primary care provider. During a routine checkup or a scheduled visit, your doctor writes a lab order, and you either get your blood drawn on-site or take the order to a nearby lab. Insurance typically covers tests ordered this way, especially preventive screenings. Under the Affordable Care Act, most health plans must cover a set of preventive screening tests at no cost to you, with no copayment or coinsurance, even if you haven’t met your deductible. That includes standard cholesterol panels and blood glucose checks when they’re part of recommended preventive care.
If you don’t want to schedule an in-person visit, telehealth platforms now offer lab ordering as part of their services. Companies like Hims and Function Health have built testing into their business models. Function Health, for example, sells access to more than 100 tests for a flat subscription of $365 a year. With most telehealth services, you fill out a health questionnaire, a clinician reviews it and writes the lab order, and you visit a local lab for the blood draw. Some of these companies also have their own clinicians review your results before you see them on an online dashboard.
Ordering Directly From a Lab
You don’t necessarily need a doctor at all. Thirty-seven states and the District of Columbia allow consumers to order some or all of their own lab tests directly. The two largest national lab companies, Labcorp and Quest Diagnostics, both run direct-to-consumer platforms.
Labcorp OnDemand’s process is straightforward: you browse available tests on their website, purchase the one you want, and register it to your account. A physician affiliated with the service reviews and signs off on the order (this happens behind the scenes, usually immediately). Then you schedule an appointment at a nearby Labcorp location, show up for your blood draw, and get results delivered to your online patient account. Quest’s platform, called QuestDirect, follows a nearly identical process.
The key limitation: direct-to-consumer services don’t bill insurance. You pay out of pocket at the time of purchase. However, many of these tests qualify as eligible expenses for Health Savings Accounts (HSA) and Flexible Spending Accounts (FSA). Labcorp OnDemand accepts HSA and FSA cards at checkout for a wide range of tests, including wellness panels, hormone tests, pregnancy tests, and COVID-19 tests. If you have money sitting in one of those accounts, this can offset the cost significantly.
State Restrictions to Know About
Whether you can order your own blood work depends on where you live. Thirteen states still require a physician to be involved in ordering lab tests, meaning direct-to-consumer platforms may not be available to you or may offer a limited test menu. The specific restrictions vary by state. If you’re in one of those states, a telehealth visit is your simplest workaround: a brief online consultation gets you a physician order, which then lets you visit any lab.
How to Prepare for Your Blood Draw
Some tests require fasting, meaning no food or drink other than plain water for 8 to 12 hours before the draw. The most common tests that require fasting are blood glucose (blood sugar) tests and lipid panels, which measure cholesterol and triglycerides. Not every glucose test requires fasting, though, so check when you schedule. While fasting, you should also avoid chewing gum, smoking, and exercising, as all three can alter your results. For certain tests, you may be asked to skip alcohol for a longer period beforehand.
Timing matters more than most people realize. Thyroid-stimulating hormone (TSH), one of the most commonly ordered tests, fluctuates substantially throughout the day. Research published in PLOS One found that this daily variation was large enough to change whether a patient’s results fell inside or outside the normal range. The standard recommendation is to have blood drawn in the morning, ideally between 7 and 9 a.m., which is when most lab reference ranges are calibrated. If you get your blood drawn in the afternoon, your TSH results could read differently than they would have that morning, potentially leading to a misleading result. Cortisol and testosterone follow similar daily patterns. If you’re testing any of these hormones, schedule an early appointment.
Arriving 10 to 15 minutes early to sit and rest before your draw is standard advice, though recent research suggests this resting period may be less critical than previously thought for most routine tests. Still, rushing in from a workout or a stressful commute isn’t ideal.
What Tests Cost Without Insurance
Prices for direct-to-consumer tests vary widely depending on the provider and the panel. A basic metabolic panel or lipid panel typically runs $30 to $60 through Labcorp OnDemand or QuestDirect. Comprehensive panels that bundle dozens of markers together cost more, often $100 to $200. Hormone panels and specialty tests like thyroid antibodies or vitamin D can range from $40 to $150 each. Subscription services like Function Health bundle everything into a flat annual fee, which can be cost-effective if you want extensive testing but expensive if you only need one or two markers.
If you have insurance and want coverage, the most cost-effective route is still going through your doctor. Preventive screenings recommended by the U.S. Preventive Services Task Force are covered with no out-of-pocket cost under most plans. Diagnostic tests ordered because of a specific symptom or condition are also typically covered, though they may be subject to your deductible and copay.
Getting and Understanding Your Results
Routine blood tests like a complete blood count or metabolic panel generally return results within one to three business days. Hormone panels and more specialized tests can take slightly longer, sometimes up to a week. Direct-to-consumer platforms deliver results to your online account, and most flag values that fall outside the standard reference range.
A flagged result doesn’t automatically mean something is wrong. Reference ranges represent where roughly 95% of healthy people fall, so about 1 in 20 results in a healthy person will land outside the range by pure statistics. Context matters: your age, sex, medications, hydration, and even the time of day all influence your numbers. If you ordered tests on your own and something looks off, bringing the results to a doctor for interpretation is a practical next step. Most providers are happy to review outside lab work, and having concrete data in hand can make that conversation more productive.