First of all some guy reported side affect and caber does have side affects and it can make you sick like all the shit you take including:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); back pain; behavior changes (eg, aggression, increased gambling or sexual urges); burning, numbness, or tingling; chest pain; confusion; decreased urination; fainting; hallucinations; irregular heartbeat; mood or mental changes (eg, depression); persistent cough; severe or persistent dizziness or light-headedness; severe stomach pain or tenderness; shortness of breath; sudden, unexplained weight gain; swelling of hands, ankles, legs, or feet; vision changes.
Some guy testes but he did not say what it was, he is using HPLC in order to detect you need standard for caber I doubt he has one because it is hard to get one. You cannot just run something unknown on HPLC and the guess what it is.