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Patient Guide

Walk-In Blood Tests in Ottawa: No Appointment Needed

Published August 4, 2026

If you have searched for a blood test near you in Ottawa, here is the short answer: at Bio-Test Laboratory you do not need to book a spot for routine bloodwork. Just walk in with your Ontario health card and your lab requisition, and we take patients on a first-come, first-served basis. We have served the Ottawa-Carleton region and Eastern Ontario since 1971, and today we run 11 locations, several of them in suburbs and towns that other labs do not reach.

No booking needed, just walk in

Most people expect to schedule a blood test the way they would a dentist visit. For standard bloodwork at Bio-Test, that step is not required. Your health-care provider gives you a requisition, and you bring it to any of our labs during open hours. There is no requisition-booking process to complete first and no online reservation to secure. You are seen in the order you arrive.

You are welcome to book online through our patient portal if you prefer a set time, but walking in is completely normal here and is how most of our patients come in.

What to bring

11 locations across Ottawa-Carleton and Eastern Ontario

Many patients drive across the city for a lab because their neighbourhood is not served. Our network is built to shorten that trip. Beyond central Ottawa, we have locations in Nepean, Orleans, Cornwall, Carleton Place, Embrun, and Carp, so people in the suburbs and surrounding towns can stay close to home.

To confirm the closest option and its hours before you head out, use our location finder.

Who can walk in

Anyone with a valid requisition can walk in for lab collection. That includes routine chemistry, blood counts, thyroid and cholesterol panels, pre-natal work, and most of the 1000-plus tests we offer. If your requisition calls for fasting, come in the morning and have only water beforehand. Your requisition will indicate whether fasting is required, so follow what it says rather than guessing.

A tip on timing

Mornings are our busiest stretch because fasting patients arrive early to eat afterward. If your test does not require fasting, coming later in the morning or in the afternoon often means a shorter wait. If you do need to fast, arriving right at opening is usually the smoothest choice.

X-ray and ECG are walk-in too

It is not only bloodwork. With a valid requisition you can also walk in for X-ray and ECG on a first-come, first-served basis, though booked appointments are available as well. X-ray is offered at Bells Corners and Smyth, and ECG at Bells Corners, Smyth, and Parkdale. Ultrasound is available at select locations by appointment.

Getting your Ottawa blood test at Bio-Test

Walking in is the simplest path: bring your Ontario health card and requisition to any of our 11 locations across Ottawa-Carleton and Eastern Ontario, no appointment needed for most bloodwork. Prefer a set time? Book online through our patient portal. Not sure how to get ready? Read how to prepare for a blood test. Homebound or have mobility needs? Home visits are available by request for a fee, call 613-789-4242.

Stay informed

Questions about a test?
Our team is here to help.