@kmac03 samples require different tests for terpenes and cannabinoids since they decarboxylate and evaporate at different temperatures. It also will vary depending on the method of testing whether it was gas chromatography-flame ionized, analytical chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy.
All of them except the last method require more plant material to be accurate since it is either dissolved in solvent or exposed to heat/flame and consumed to measure cannabinoids.
The last method mentioned uses radio waves to measure molecules and assembles the molecular structure in data. I think this one is the most accurate and it also requires less flower for testing but the equipment is expensive as hell. Labs that have nuclear magnetic resonance spectroscopy usually charge less for tests though because they’re quick and you can do more with this equipment than the others.