| The Effects of Blood Collection Tubes on Folate Measurements | Hacı Kemal ERDEMLİ, Ramazan KOCABAŞ, Sumeyya AKYOL | 1–5 |
| Analysis of pre-preanalytical errors in the clinical biochemistry laboratory of Kayseri Eğitim ve Araştırma Hastanesi | Leyla ÖZ, Selma BULDU, Derya KOÇER, Çiğdem KARAKÜKCÜ | 6–11 |
| Reliability and Validity of The Turbidimetric Method | Nilgün IŞIKSAÇAN, Asuman GEDİKBAŞI, Alev KURAL, Şebnem Tekin NEİJMANN | 12–17 |
| Prevalence of Vitamin D insufficiency and deficiency in operating room personel | Seçkin ÖZGÜR TEKEL, Neşet CERİT, Necat YILMAZ, Hamit Yaşar ELLİDAĞ, Güzin AYKAL | 18–25 |
| The Impact of Time Delay on the Measurement of Platelet Indices | Yasemin ÜSTÜNDAĞ, Leyla GÜNAY, Kağan HUYSAL, Faruk IRMAK | 26–31 |
| The Evaluation of Rejected Samples Prevalence Using Six Sigma | Şerif ERCAN | 32–39 |
| Holotranscobalamin Levels in Mid Vitamin B12 Values | Özgür BAYKAN, Medeni ARPA, Hacer Bilgin TOPALOĞLU, Ebru YAPRAK, Aynur KIRBAŞ, Medine Cumhur CÜRE | 40–45 |
| Comparison of vitamin D levels measured by HPLC and Immunoassay | Özkan ALATAŞ, Müge BEKMEZ | 46–50 |
| Immunoturbidimetric and Electrochemiluminescence Methods for Ferritin Measurement | Defne ÖZBEK, Fatma Demet İNCE, Ramazan AVCI, Elif Merve ARI, Merve ZEYTİNLİ, Hamit Yaşar ELLİDAĞ | 51–57 |
| Drug Abuse Testing in Clinical Laboratories | Aslı PINAR, Tuncay KÜME, Nilgün KARA UZUN, Çiğdem KARAKÜKCÜ | 58–71 |