The diagnostic uses of saliva

Area of Science:

• Biochemistry
• Clinical Diagnostics
• Molecular Biology

Background:

• Saliva is increasingly recognized for its diagnostic potential across various medical disciplines.
• Its utility is particularly noted in pediatric, geriatric, and large-scale epidemiological screening.
• Advancements in sensitive testing allow for precise quantification of analytes even at low concentrations.

Purpose of the Study:

• To highlight the expanding diagnostic applications of saliva analysis.
• To underscore the value of saliva in endocrinology, drug monitoring, and infectious disease detection.
• To review systemic diseases impacting salivary gland function and composition.

Main Methods:

• Quantification of hormones and drugs in saliva using highly sensitive assays.
• Measurement of steroid profiles for clinical endocrinology.
• Detection of antibodies (e.g., anti-HIV) and viral antigens in saliva.
• Assessment of salivary gland function in systemic diseases.

Main Results:

• All diagnostically significant steroids can now be measured in saliva.
• Saliva testing is effective for monitoring both therapeutic and abusive drugs.
• Concordance of anti-HIV antibodies in saliva and serum supports broader viral marker detection.
• Saliva analysis aids in diagnosing Sjögren's syndrome, cystic fibrosis, and adrenal cortex diseases.

Conclusions:

• Saliva is a versatile and valuable biofluid for a growing range of diagnostic applications.
• Its non-invasive nature makes it ideal for frequent monitoring and diverse patient groups.
• Continued research is expanding the scope of salivary diagnostics in clinical practice.