GMP Testing Service Market Increasing Demand, Growth Analysis and Future Outlook by 2031 The global GMP testing service market is anticipated to grow at a CAGR of 6.7% during the forecast period (2024-2031). Testing of drug substances involves analysing active pharmaceutical ingredients (APIs) to assess their quality, purity, and potency. This includes using methods such as chromatography, spectroscopy, and mass spectrometry. Microbiological testing is important to ensure...