Sample W: Initial Urine Color: Yellow pH: 1 Benedict's Solution Before Heating: Green/Teal Benedict's Solution After Heating: Blue Biuret Reagent Color: Teal/Blue Sample X: Initial Urine Color: Clear pH: 6 Benedict's Solution Before Heating: Translucent Light Blue Benedict's Solution After Heating: Translucent Light Blue Biuret Reagent Color: Darker Blue Sample Y: Initial Urine Color: Pale Yellow pH: 8 Benedict's Solution Before Heating: Murky Green Benedict's Solution After Heating: Darker Murky Green Biuret Reagent Color: Dark Blue and Purple Sample Z: Initial Urine Color: Translucent Yellow pH: 8 Benedict's Solution Before Heating: Translucent Blue Benedict's Solution After Heating: Orange Biuret Reagent Color: Blue
Based on the samples, answer: the 4 people who donated the above urine samples could complain of a symptom or condition which is common to all of them. describe what it is?