A metabolic panel is one of the most common blood tests your provider will order, a bundle of measurements that check your blood sugar, kidney function, and the balance of key chemicals in your body. You may hear it called a BMP or a CMP. Here is the difference between the two, why they are ordered, and how to get one done in the Ottawa area.
What a basic metabolic panel (BMP) includes
A BMP is a group of about eight tests that give a quick read on your metabolism and kidney health:
- Glucose, your blood sugar level
- Electrolytes: sodium, potassium, chloride, and bicarbonate (CO2), which keep fluids and nerves balanced
- Kidney markers: creatinine and urea (BUN), which show how well your kidneys are filtering
- Calcium, important for muscles, nerves, and bone
Together these can flag issues like dehydration, kidney trouble, blood sugar problems, or electrolyte imbalances. A BMP is quick, inexpensive to run, and gives your provider a broad safety check in a single tube of blood, which is why it turns up so often on requisitions.
What a comprehensive panel (CMP) adds
A comprehensive metabolic panel includes everything in the BMP and adds liver and protein measurements, usually about 14 tests in total:
- Liver enzymes such as ALT, AST, and ALP
- Bilirubin, a waste product cleared by the liver
- Total protein and albumin, which reflect nutrition and liver function
In short, a CMP is a BMP plus a look at the liver and proteins. Your provider chooses the one that matches what they need to check, so there is no need to request a bigger panel yourself; ordering the right tests is part of their job and keeps your bloodwork focused on what actually matters for you.
Why these panels are ordered
- As part of a routine physical or annual checkup
- To monitor a chronic condition such as diabetes, kidney disease, or high blood pressure
- To keep an eye on medications that affect the kidneys or liver
- To investigate symptoms like fatigue, weakness, or swelling
Because they cover so much ground in a single draw, metabolic panels are a workhorse of everyday bloodwork. You can see how they fit alongside other tests in our test directory.
Fasting and the glucose question
Whether you need to fast depends mainly on the glucose portion. If your provider wants a fasting glucose, you will typically fast 8 to 12 hours beforehand; water is fine, but avoid food, coffee, tea, and gum. If blood sugar is not the focus, fasting may not be required. Your requisition will indicate whether fasting is needed, and our prepare-for-a-blood-test guide explains how to get ready. Diabetes Canada recommends that adults 40 and over screen for diabetes every three years, which often uses a fasting glucose or A1C.
How it fits an annual checkup
Metabolic panels are often part of a broader set of annual bloodwork, alongside a complete blood count or cholesterol testing. Bundling them means one visit and one needle for several answers. In Ontario a physician, nurse practitioner, or midwife must order the panel, and OHIP covers medically necessary testing for those with a valid Ontario health card.
Getting a metabolic panel at Bio-Test
You can have a BMP or CMP drawn at any Bio-Test Laboratory location across Ottawa-Carleton and Eastern Ontario. Walk in with your Ontario health card and signed requisition, with no appointment needed, or book through the patient portal. If your panel includes a fasting glucose, mornings are the busiest time as many patients come in fasting, so arriving early helps. Find your nearest of our 11 locations, and ask about home visits if getting to the lab is a challenge.