Drug screen blood sample test tubes with blood collection supplies. Drug screens are used to determine the presence of substances such as diazepam, ethanol, and barbiturates in the blood serum. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / SHERRY YATES YOUNG |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |