Fig. 1From: Modified enzyme multiplied immunoassay technique of methotrexate assay to improve sensitivity and reduce costa Method comparison between modified EMIT assay and LC-MS/MS assay in the range of 0.05–10.00 μmol/L. (EMIT) = 1.0872(LC-MS/MS) + 0.0281, N = 79, R2 = 0.9968. b. Method comparison between Modified assay and Commercial assay in the range of 0.30–10.00 μmol/L. (Modified) = 1.0080(Commercial)-0.0064, N = 45, R2 = 0.9987Back to article page