[Trace elements in biological materials. Preanalysis safeguards]

Area of Science:

• Clinical Chemistry
• Analytical Chemistry
• Environmental Health

Context:

• Trace element analysis is crucial for diagnosing deficiencies or toxicities.
• Preanalytical factors significantly influence the accuracy of trace element measurements.
• Accurate quantification of elements like lead, mercury, and arsenic is vital for patient health.

Purpose:

• To highlight the importance of preanalytical safeguarding in trace element analysis.
• To outline essential steps for obtaining objective trace element data.
• To prevent significant distortions in analytical results.

Summary:

• Objective trace element analysis (Al, As, Cd, Cr, Co, Cu, Pb, Li, Mn, Hg, Ni, Se, Zn) necessitates strict preanalytical procedures.
• Key steps include gathering patient data, selecting appropriate sample types and timing, and proper sample handling.
• Adherence to these principles minimizes contamination and ensures reliable results.

Impact:

• Ensures the accuracy and reliability of trace element testing.
• Prevents misdiagnosis related to trace element levels.
• Improves patient outcomes by providing trustworthy diagnostic information.