Current diagnostic uses of saliva

Area of Science:

• Biochemistry
• Clinical Diagnostics
• Analytical Chemistry

Background:

• Historically, salivary composition analysis yielded limited diagnostic value for most diseases.
• Recent advancements have expanded the diagnostic utility of saliva, particularly for systemic drug and hormone level estimation.
• Saliva analysis is increasingly recognized for its non-invasive advantages over serum or urine testing.

Purpose of the Study:

• To highlight the growing diagnostic applications of saliva analysis.
• To emphasize the advantages of using saliva for monitoring systemic levels of lipid-soluble drugs and hormones.
• To showcase the role of advanced immunoassay techniques in saliva diagnostics.

Main Methods:

• Review of existing literature on salivary composition and diagnostic applications.
• Discussion of methods for estimating systemic drug and hormone levels via saliva.
• Focus on the application of immunoassay techniques for sensitive substance detection in saliva.

Main Results:

• Saliva analysis is proving valuable for estimating systemic levels of lipid-soluble drugs and hormones.
• Thiocyanate levels in saliva can validate tobacco-smoking frequency.
• Nitrate levels in saliva can estimate dietary nitrate intake.
• Steroid hormone concentrations in saliva are a recognized method for determining systemic levels, offering advantages over serum or urine analysis.

Conclusions:

• Saliva analysis has evolved into a practical diagnostic tool with significant advantages.
• Advanced immunoassay methods allow for the precise measurement of minute concentrations of biologically active substances in saliva.
• The diagnostic utility of saliva is expected to expand further with technological advancements.