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Serum or Plasma Saliva Total Protein Concentration

Published: August 9, 2026Updated: August 16, 2026

This test measures the total amount of protein found in your saliva, which can help assess overall protein balance or identify potential health concerns.

Quick summary

["Saliva protein levels may reflect systemic health or conditions affecting protein metabolism."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
37862-0
Short code
XR Sinuses Lat+Waters
Synonyms
XR Sinuses Lat+Waters
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like chronic dry mouth, unexplained weight changes, or conditions linked to protein disorders (e.g., kidney disease, liver issues, or malnutrition). It could also be part of a broader evaluation for unexplained systemic symptoms.

What to Expect During the Test

No special preparation is needed. A small saliva sample is collected, often by gently pressing a cotton swab into your mouth for a few seconds. The sample is then sent to a lab for analysis.

How the Results Are Interpreted

Results are compared to general reference ranges for protein concentration in saliva, though individual variations can occur. Abnormal levels may signal underlying health issues that need further investigation.

Common Conditions Linked to Saliva Protein Levels

Elevated levels might indicate conditions like chronic inflammation, certain infections, or metabolic disorders. Low levels could suggest dehydration, malnutrition, or conditions affecting saliva production.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Protein in Saliva

Frequently asked questions

What causes saliva protein levels to change?
Several factors can influence saliva protein levels, including dehydration, certain medications, infections, or underlying health conditions like kidney disease or liver problems. Stress, smoking, or oral health issues (e.g., gum disease) may also play a role.
Is saliva protein testing painful or uncomfortable?
No, this test is generally painless. Collecting saliva is quick and involves minimal discomfort, often just a brief touch with a swab in your mouth.
How often should saliva protein tests be repeated?
Frequency depends on your healthcare provider’s recommendations. If this test is part of ongoing monitoring (e.g., for a chronic condition), results may be reviewed periodically to track changes in protein levels.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy