iarjimphIARJIMPHIARJIMPH2709-331Xhttps://doi.org/10.47310/iarjimph.2022.v03i02.019A Retrospective Review of Laboratory Records for Analyzing the Results of Hemoglobin (Hb), Serum Vitamin B-12 and Vitamin D TestsArchieMadanAasthaSehgalAmitSachdevaBackground: Hemoglobin (Hb), Vitamin B-12 and Vitamin D tests are designed to screen & measure the levels of these specific vital components in the body and suggest corrective action & treatment plans. The present study aimed to analyze the results of Hemoglobin (Hb), Serum Vitamin B-12 and Vitamin D tests done at a Private Laboratory in New Delhi. Methods: Retrospective review of records of a private laboratory named Labcorp Diagnostics Pvt Ltd covering the period 1st to 31st January 2022 was done. Laboratory data of study participants who were undergone Hemoglobin (Hb), Vitamin B-12 and Vitamin D tests during the study period was retrieved and analyzed using Epi Info V7 Software. Results: In the present retrospective review, laboratory data of 169 study participants who had undergone Hemoglobin (Hb), Vitamin B-12 and Vitamin D tests was analyzed. Mean Haemoglobin (Hb) level was 12.53±2.082g/dL. 109(64.5%) had their Hb level in normal range, 56(33.1%) had Hb level below the normal range while only 4(2.4%) study participants had their Hb level above the normal range. Mean Serum B12 Level was 370.02±357.223ng/mL. 96(56.8%) had their Serum B12 Level in normal range, 61(36.1%) had Serum B12 Level below the normal range while only 12(7.1%) study participants had their Serum B12 Level above the normal range. Mean Serum Vit D3 Level was 24.28±24.268ng/mL. 41(24.3%) had their Serum Vit D3 Level in normal range, 127(75.1%) had Serum Vit D3 Level below the normal range while only 1(0.6%) study participants had their Serum Vit D3 Level above the normal range. Conclusion: Present study concluded that almost one third of the study participants had their Hemoglobin (Hb) and serum Vitamin B-12 level below the normal range while almost three fourth of the study participants had their Serum Vit D3 Level below the normal range.