Araştırma Makalesi

Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes

Cilt: 18 Sayı: 3 2 Temmuz 2025
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Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes

Öz

Purpose: We aimed to calculate preanalytical error rates in the Medical Microbiology Laboratory of our hospital by the six-sigma method and examine the effect of training on error rates by comparing performances of processes before and after training. Materials and methods: All samples evaluated between 2016-2021 were retrospectively examined. Rejected samples, blood culture contamination rate and urine culture contamination rate were evaluated via Laboratory Error Classification System. The staff obtaining laboratory samples were trained by means of live classes during 2017, 2018 and 2019, and with online classes during 2021. Error rates and sigma levels were calculated before and after training. Results: 685591 samples were accepted by our laboratory; 1175 (0.2%) were rejected. The most frequent cause of rejection (53.4%) was hemolysis of sample. The sigma levels showed hemolysis of the sample as the most frequent cause of rejection, with a value of 4.7 (good performance). Among other quality indicators, the rate of urinary culture contamination was 11.4%, and the rate of blood culture contamination was 3.5%. The total sigma level of urine culture contamination was 2.9 (unacceptable performance), and the total blood culture contamination was 3.5 (minimal performance). Error rates had generally decreased after training, while an increase in performance at the sigma level was detected at all three indicators. Conclusion: In order to minimize preanalytical errors in the medical laboratory, the preanalytical process should be regularly surveyed by quality and performance indicators, and continuing education should provide current information.

Anahtar Kelimeler

Kaynakça

  1. 1. Korkmaz Ş. Evaluation of rejected sample rates using six sigma method. Türk Klinik Biyokimya Derg. 2020;18(1):17-25.
  2. 2. Lee NY. Reduction of pre-analytical errors in the clinical laboratory at the University Hospital of Korea through quality improvement activities. Clin Biochem. 2019;70:24-29. doi:10.1016/j.clinbiochem.2019.05.016
  3. 3. İren Emekli D, Aslan D, Zorbozan N. Evaluation of the performance of the pre-analytical phase of the testing process in Medical Laboratory Accreditation. Northwestern Med J. 2022;2(1):1-10. doi:10.54307/NWMJ.2022.43534
  4. 4. Özdemir H. Toplam test sürecinde kalite indikatörlerinin değerlendirilmesi. Manisa Celal Bayar Üniversitesi Tıp Fakültesi Tıbbi Biyokimya Anabilim Dalı, Uzmanlık Tezi, 2019.
  5. 5. Dağlıoğlu G, Öztürk ÖG, İnal TC. Quality management in clinical laboratories: application of six sigma protocol. Cukurova Med J. 2019;44(1):272-280. doi:10.17826/cumj.555156
  6. 6. West J, Atherton J, Costelloe SJ, Pourmahram G, Stretton A, Cornes M. Preanalytical errors in medical laboratories: a review of the available methodologies of data collection and analysis. Ann Clin Biochem. 2017;54(1):14-19. doi:10.1177/0004563216669384
  7. 7. Çakmak C, Konca M, Teleş M. Türkiye Ulusal Güvenlik Raporlama Sistemi (GRS) üzerinden tıbbi hataların değerlendirilmesi. HSİD. 2018;21(3):423-48.
  8. 8. Çeken N, Avcı E, Duran H. Sigmametric evaluation of preanalytical errors in a medical microbiology laboratory. Türk Mikrobiyol Cem Derg. 2018;48(2):141-6. doi:10.5222/TMCD.2018.141

Ayrıntılar

Birincil Dil

İngilizce

Konular

Sağlık Hizmetleri ve Sistemleri (Diğer)

Bölüm

Araştırma Makalesi

Erken Görünüm Tarihi

5 Mart 2025

Yayımlanma Tarihi

2 Temmuz 2025

Gönderilme Tarihi

20 Kasım 2024

Kabul Tarihi

28 Şubat 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 18 Sayı: 3

Kaynak Göster

APA
Ceken, N., Duran, H., Kula Atik, T., & Avcı, E. (2025). Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes. Pamukkale Medical Journal, 18(3), 648-659. https://doi.org/10.31362/patd.1588433
AMA
1.Ceken N, Duran H, Kula Atik T, Avcı E. Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes. Pam Tıp Derg. 2025;18(3):648-659. doi:10.31362/patd.1588433
Chicago
Ceken, Nihan, Hülya Duran, Tuğba Kula Atik, ve Esin Avcı. 2025. “Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes”. Pamukkale Medical Journal 18 (3): 648-59. https://doi.org/10.31362/patd.1588433.
EndNote
Ceken N, Duran H, Kula Atik T, Avcı E (01 Temmuz 2025) Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes. Pamukkale Medical Journal 18 3 648–659.
IEEE
[1]N. Ceken, H. Duran, T. Kula Atik, ve E. Avcı, “Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes”, Pam Tıp Derg, c. 18, sy 3, ss. 648–659, Tem. 2025, doi: 10.31362/patd.1588433.
ISNAD
Ceken, Nihan - Duran, Hülya - Kula Atik, Tuğba - Avcı, Esin. “Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes”. Pamukkale Medical Journal 18/3 (01 Temmuz 2025): 648-659. https://doi.org/10.31362/patd.1588433.
JAMA
1.Ceken N, Duran H, Kula Atik T, Avcı E. Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes. Pam Tıp Derg. 2025;18:648–659.
MLA
Ceken, Nihan, vd. “Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes”. Pamukkale Medical Journal, c. 18, sy 3, Temmuz 2025, ss. 648-59, doi:10.31362/patd.1588433.
Vancouver
1.Nihan Ceken, Hülya Duran, Tuğba Kula Atik, Esin Avcı. Evaluation of preanalytical error processes in the microbiology laboratory and effect of training on these processes. Pam Tıp Derg. 01 Temmuz 2025;18(3):648-59. doi:10.31362/patd.1588433
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