A testing system configured to determine an analyte concentration has a user interface that includes a number of visual indicators on its exterior housing. The visual indicators convey different types of information to a user of the testing system when illuminated. Additionally, the indicators are independent of one another in that they can each be illuminated in different colors from one other and tum on and/or off independently of one another. Further, the visual indicators are illuminated using a common lighting element (e.g., a single light emitting diode (“LED”)) in combination with one or more waveguides and one or more filters located inside the testing system.本發明描述一種經組態以測定一分析物濃度之測試系統，在其外部殼體上具有包含許多視覺指示器之一使用者介面。當照明時，該等視覺指示器傳達不同類型之資訊至該測試系統之一使用者。另外，該等指示器彼此獨立之處在於其可各自以彼此不同之顏色照明且可彼此獨立地打開及/或關閉。此外，使用一共同發光元件(例如一單一發光二極體(「LED」))與位於該測試系統內部之一個或多個波導及一個或多個濾波器組合來照明該等視覺指示器。
