Urine testing. Unopened urine test strips for urinary tract infection (UTI) screening. The strips arefixed with a reagent which changes colour according to the amount of nitrites in the urine. An excessive amount of nitrites suggests that there is a UTI because this indicates the presence of bacteria which convert nitrate to nitrite | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Horrell, Steve |
Bildgröße: | 4864 px × 3606 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |