Tampubolon, B.D. , Prasetya, B. , Novitasari, N., Anggraeni, P. and Anggundari, W.C. 2025. Evaluation and meta-analysis of HTP testing methods in harm reduction. International Journal of Innovative Research and Scientific Studies. 8, 7 (Oct. 2025), 72–93. DOI:https://doi.org/10.53894/ijirss.v8i7.10403.