Secondary 2 – Biology: Urinalysis
Secondary 2 students recently engaged in an exciting Biology practical session focused on urinalysis, where they investigated the presence of glucose and protein in urine samples using chemical reagents. Through this laboratory activity, students developed scientific investigation skills while learning how urinalysis can help identify health conditions in the human excretory system.
Students first applied basic laboratory procedures and scientific concepts. In the glucose test, students poured urine samples into test tubes, added Benedict’s reagent, and heated the mixture in a 75°C water bath. They carefully observed the color changes that occurred during the reaction. A discoloration to yellow indicated the presence of glucose in the sample.
Next, students conducted the protein test using Biuret reagent. They added the reagent to the urine samples and observed the results closely. A change in color to purple became the indicator of protein presence. Students recorded their observations systematically and compared the outcomes between groups.
As the activity progressed, students moved beyond simple observation into deeper analysis and reasoning. They interpreted the test results, discussed possible health implications related to glucose or protein in urine, and connected the experiment to disorders involving the excretory system, such as diabetes and kidney dysfunction.
The hands-on experiment encouraged students to think critically, collaborate effectively, and apply Biology concepts to real-life medical contexts. Through this urinalysis investigation, students experienced how science is used in healthcare while strengthening their laboratory and analytical skills.
