THC/Creatinine Ratio: What does that mean?
Friday, March 24, 2017 | Views:19,320 | Posted by: Michelle Volk | Reading Time: | Article Tags:
GLL laboratory staff often receives questions about the meaning of the THC/Creatinine Ratio. We thought it fitting to share this information with you.
THC concentration/creatinine ratio makes it easier to distinguish new use from residual excretion. Therefore, following ingestion of marihuana, the ratio should gradually decrease until a new episode of drug use occurs. This ratio is the best indicator of continued drug use when compared to previous values on the same patient. (Sample comparison must be within a 21 day timeframe.) In addition, it is important to note that the concentration of THC can fluctuate from day to day depending upon a person’s fluid intake. Increased fluid will lower both the THC and the creatinine concentration on the urine while dehydration causes the exact opposite. Whew! All of that boils down to this: new use or the ceasing of use can be monitored through this ratio.
If you have questions on this information please contact us at info@gl-labs.com or 1-888-464-8885.
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