Risk investigations involving genetic identification.

Area of Science:

• Medical Diagnostics
• Genetics
• Laboratory Medicine

Background:

• Patient misidentification and specimen mix-ups are significant sources of diagnostic and process errors in healthcare.
• Unexplained errors often stem from issues in patient identification and sample handling within hospital and laboratory settings.

Purpose of the Study:

• To evaluate the utility of genetic typing, specifically DNA markers, in resolving cases of patient misidentification and specimen mislabeling.
• To demonstrate how genetic analysis can improve accuracy in patient-sample identification and reduce errors.

Main Methods:

• Analysis of 22 hospital and laboratory cases involving accidental or intentional patient misidentification, specimen mislabeling, or sample contamination.
• Application of genetic typing, focusing on DNA markers, to establish or refute identity between unknown and reference specimens.

Main Results:

• Genetic typing provided conclusive evidence of patient or sample identity in 21 out of 22 reviewed cases.
• The probability of identity is established with high confidence when infrequent genetic markers are matched.
• Genetic tests definitively establish non-identity with virtual certainty.

Conclusions:

• Genetic typing is a powerful tool for resolving patient misidentification and specimen mix-up errors.
• Implementing genetic testing can significantly enhance the accuracy of patient-sample identification in clinical settings.
• Risk managers should consider genetic analysis as a method to investigate and prevent diagnostic and process errors related to identity.