Protein, Total
It measures the total amount of protein in your blood to help assess nutrition, liver, kidney, and inflammation patterns—order through Vitals Vault at Quest.
This panel bundles multiple biomarker tests in one order—your report explains how results fit together.
Protein, Total is a simple blood test that adds up two major protein groups in your bloodstream: albumin and globulins. Because these proteins are made, moved, and lost in different ways, the total can shift when your hydration status changes or when your liver, kidneys, immune system, or nutrition status changes.
A single number rarely tells the whole story. Your total protein result is most useful when you look at it alongside related labs—especially albumin, globulin (or calculated globulin), and sometimes the albumin/globulin (A/G) ratio.
If your result is low or high, it does not automatically mean you have a specific disease. It is a signal to interpret in context with your symptoms, medications, and other lab findings, ideally with a clinician.
Do I need a Protein, Total test?
You may benefit from a Protein, Total test if you are trying to make sense of unexplained swelling, fatigue, frequent infections, or unintentional weight loss. It is also commonly checked when you are evaluating liver or kidney health, because both organs play a central role in making, processing, or retaining proteins.
This test is often included as part of routine chemistry panels, so you might already have a result from a recent set of labs. If you have a borderline result, repeating it after addressing obvious factors—like dehydration, recent illness, or a major change in diet—can help confirm whether the change is persistent.
You may also want this test if you are monitoring a known condition that can affect blood proteins, such as chronic liver disease, kidney disease with protein loss, inflammatory or autoimmune conditions, or certain blood disorders. Testing supports clinician-directed care and follow-up planning; it is not a standalone diagnosis.
This is a standard blood chemistry measurement typically performed in CLIA-certified laboratories; results should be interpreted with your overall clinical picture and are not diagnostic on their own.
Lab testing
Order Protein, Total (or pair it with a CMP) and complete your draw at Quest.
Schedule online, results typically within about a week
Clear reporting and optional clinician context
HSA/FSA eligible where applicable
Get this test with Vitals Vault
Vitals Vault lets you order Protein, Total testing directly, then complete your blood draw at a nearby Quest location. It is a practical option when you want a clear baseline, you are rechecking an abnormal result, or you want to pair total protein with companion markers that make the number easier to interpret.
After your results post, you can use PocketMD to walk through what your level may mean, what follow-up labs are commonly considered, and what questions to bring to your next appointment. This is especially helpful when your total protein is only mildly out of range and you are deciding whether to retest or expand testing.
If you are tracking changes over time, ordering through Vitals Vault makes it easier to keep your results in one place so you can compare trends rather than reacting to a single data point.
- Order online and draw at Quest
- PocketMD support for next-step questions
- Designed for trending and retesting
Key benefits of Protein, Total testing
- Gives a quick snapshot of your body’s overall circulating protein status (albumin plus globulins).
- Helps flag hydration-related shifts that can make other lab values look better or worse than they are.
- Adds context to liver health patterns when interpreted with albumin and other liver enzymes.
- Supports kidney evaluation when paired with urine protein testing and kidney function markers.
- Can point toward inflammation or immune activation when total protein is high and globulins are elevated.
- Helps guide sensible follow-up testing (albumin, A/G ratio, serum protein electrophoresis) when results are abnormal.
- Makes it easier to track whether a change is persistent by trending the same test over time through Vitals Vault.
What is Protein, Total?
Protein, Total (often reported as “total protein”) measures the combined concentration of proteins circulating in your blood serum. The two biggest contributors are albumin and globulins.
Albumin is made by your liver and helps keep fluid inside your blood vessels while also transporting hormones, medications, and other molecules. Globulins are a broad group that includes antibodies (immunoglobulins) and other proteins involved in immune function and inflammation.
Because total protein is a sum, it can change for different reasons. It can rise when you are dehydrated (less plasma water) or when globulins increase due to inflammation or certain immune conditions. It can fall when you are not making enough protein (for example, advanced liver disease), not absorbing enough nutrients, or losing protein through the kidneys or the gut.
Total protein is most meaningful when you interpret it with albumin and globulin (or calculated globulin) and, when available, the albumin/globulin (A/G) ratio. Those companion values help clarify whether the change is driven more by albumin, globulins, or both.
Where the number comes from
Most labs measure total protein using a chemistry method on serum. The result is typically reported in g/dL. Reference ranges vary by lab, so your “in range” should be based on the range printed on your report.
Why total protein is often ordered with other tests
Total protein is commonly part of a comprehensive metabolic panel (CMP) or hepatic function panel. On its own, it is a screening marker. The follow-up question is usually, “Is albumin low, are globulins high, or is this just hydration?”
What do my Protein, Total results mean?
Low Protein, Total
A low total protein result often reflects low albumin, low globulins, or both. Common, non-emergency reasons include poor protein intake, reduced absorption, or dilution from being overhydrated (for example, after receiving IV fluids). More clinically significant causes can include decreased production in advanced liver disease or increased losses through the kidneys (protein-losing kidney disease) or the gastrointestinal tract. If your result is low, it is usually interpreted alongside albumin, liver enzymes, kidney function, and sometimes urine testing for protein loss.
Protein, Total in range
An in-range total protein level generally suggests your circulating protein balance is stable at the time of the draw. It does not rule out liver, kidney, or immune conditions, but it makes major protein loss or severe dehydration less likely. If you still have symptoms, your clinician may focus on the individual components (albumin and globulins) or other markers that are more specific to the concern. Trending can be useful if you are monitoring a chronic condition or recovery from illness.
High Protein, Total
A high total protein result is commonly caused by dehydration, which concentrates proteins in the blood. It can also occur when globulins rise due to inflammation, chronic infection, autoimmune activity, or increased antibody production. In some situations, a persistently high total protein—especially with an abnormal A/G ratio—leads to follow-up testing such as serum protein electrophoresis (SPEP) to look at protein patterns. If your result is high, rechecking when you are well-hydrated and reviewing albumin and globulin values often clarifies the next step.
Factors that influence Protein, Total
Hydration status is one of the biggest confounders: dehydration can raise total protein, while excess fluid can lower it. Recent illness, inflammation, and immune activation can increase globulins and push the total upward even if albumin is normal. Liver function affects albumin production, while kidney and gut conditions can increase protein losses and lower the total. Medications and clinical states that change fluid balance (such as diuretics) can also shift the result, so it helps to interpret your number with your full medication list and recent health changes.
What’s included
Frequently Asked Questions
What is a normal range for total protein?
Normal ranges vary by lab and method, so the best reference is the range printed next to your result. Many labs report a typical adult range around the mid–6 to low–8 g/dL range, but your report’s range is the one your clinician will use for interpretation.
Do I need to fast for a Protein, Total blood test?
Fasting is not usually required for total protein by itself. However, if your total protein is being checked as part of a broader panel (like a CMP) that includes glucose or lipids, your clinician or the ordering instructions may recommend fasting.
What’s the difference between total protein and albumin?
Total protein is the sum of albumin plus globulins. Albumin is one specific protein made by the liver, while globulins include antibodies and other proteins involved in immune function and inflammation. Looking at albumin and globulin values helps explain why total protein is low or high.
Can dehydration cause high total protein?
Yes. Dehydration reduces the water portion of your blood, which can concentrate proteins and make total protein appear high. If dehydration is suspected, rechecking when you are well-hydrated and reviewing other markers (like albumin, hematocrit, and BUN/creatinine) can help confirm the pattern.
What follow-up tests are common if total protein is high?
A common next step is to review albumin, calculated globulin, and the A/G ratio. If globulins are elevated or the elevation persists without an obvious explanation, clinicians may consider serum protein electrophoresis (SPEP) and sometimes immunofixation to evaluate protein patterns.
What follow-up tests are common if total protein is low?
Clinicians often look at albumin, liver enzymes, bilirubin, kidney function (creatinine and eGFR), and urine testing for protein loss (such as urine albumin-to-creatinine ratio or urine protein). Your symptoms and medical history determine whether nutrition, absorption, or inflammatory causes should also be evaluated.