Saliva Accuracy Analysis as a Non-Invasive Method for Determining Blood Type

Authors

  • Dwi Sinta Maharani Student of the Faculty of Dentistry, Baiturrahmah University, Padang, Indonesia
  • Firdaus Forensic Department, Baiturrahmah University, Padang, Indonesia
  • Eka Desnita Pharmacology Department, Baiturrahmah University, Padang, Indonesia

DOI:

https://doi.org/10.30649/denta.v20i1.2

Keywords:

blood type, forensic identification, phobia, saliva

Abstract

Background: Phobia is an excessive, irrational, and persistent fear of something, which makes it difficult for someone to carry out certain activities. Psychological disorders such as phobia of blood and injections indicate the need for forensic identification methods without taking blood samples. Blood type identification plays an important role in forensic cases, especially to match the blood type of evidence of victims or perpetrators. Objective: To analyze the accuracy of saliva as a non-invasive method for determining blood type in students of the Faculty of Dentistry, Baiturrahmah University, class of 2021. Methods: This study is a quantitative observational analytic study with a cross-sectional design. The study population was 80 students selected using the simple random sampling technique. Saliva samples were analyzed using the absorption inhibition method and compared with available blood type data. The data were analyzed using SPSS version IBM 23.0 and Fisher's exact test was performed as an alternative to the chi-square test. Results: Blood types A, B, and AB have 100% compatibility in secretor individuals, while blood type O has 0% compatibility because there are no antigen A and antigen B in saliva. Statistical tests show that there is a significant level of accuracy between blood type examination through saliva and blood type in the data (p=0.000). Conclusion: Overall, it shows that blood type examination using saliva has the same level of accuracy as the conventional method.

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Published

2026-02-02

How to Cite

Dwi Sinta Maharani, Firdaus, & Eka Desnita. (2026). Saliva Accuracy Analysis as a Non-Invasive Method for Determining Blood Type. DENTA JURNAL KEDOKTERAN GIGI, 20(1). https://doi.org/10.30649/denta.v20i1.2

Issue

Vol. 20 No. 1 (2026): Februari

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Articles

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