Chemical Examination of Urine

Clinical Laboratory Science

An overview of specialized chemical tests for urine analysis, including protein, sugar, bilirubin, ketone, and urobilinogen detection methods, along with clinical interpretations and interference factors.

Urinalysis Chemistry Medical Diagnostics

15 Questions Hard Ages 18+ Aug 30, 2026

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About this Study Set

This study set covers Clinical Laboratory Science through 15 practice questions. An overview of specialized chemical tests for urine analysis, including protein, sugar, bilirubin, ketone, and urobilinogen detection methods, along with clinical interpretations and interference factors. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the Chemical Examination of Urine study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the detection limit of Ascorbic acid interference in reagent strip parameters?

A 5 mg/dL
B 10 mg/dL
C 20 mg/dL
D 50 mg/dL

2 Which reagent strip parameter is NOT reported qualitatively?

A pH
B Ketones
C Bilirubin
D Blood

3 What is the clinical range for microalbuminuria?

A 5 to 10 mg/L
B 20 to 200 mg/L
C 250 to 500 mg/L
D Above 1000 mg/L

4 Which test is used for the confirmatory detection of bilirubin?

A Clinitest
B Acetest
C Ictotest
D Hoesch Test

5 What phenomenon occurs when high concentrations of reducing substances cause a color change to orange and back to green-brown?

A False positive
B Pass-through phenomenon
C Reaction inhibition
D Buffer depletion

6 Which test is used to differentiate urobilinogen from porphobilinogen?

A Watson-Schwartz Test
B Benedict's Test
C Rubner's Test
D Mucic Acid Test

7 What reagent is used in the Hoesch test for porphobilinogen?

A Lead acetate
B Sulfosalicylic acid
C Ehrlich reagent in 6M HCl
D Copper sulfate

8 Which sugar is detected by the Mucic Acid Test?

A Glucose
B Fructose
C Galactose
D Lactose

9 What is the principle of the ImmunoDip test for microalbumin?

A Reduction
B Immunochromatography
C Enzyme immunoassay
D Precipitation

10 In the Clinitest, what is copper sulfate reduced to in the presence of alkali and heat?

A Cupric oxide
B Cuprous oxide
C Copper carbonate
D Copper chloride

11 Which drug-related substance can cause a false-positive result in the Ketone test?

A Ascorbic acid
B Free sulfhydryl-containing drugs
C Glucose
D Bilirubin

12 What is the normal concentration range for Urobilinogen?

A 0.0 to 0.1 mg/dL
B 0.2 to 1.0 mg/dL
C 1.1 to 2.0 mg/dL
D Above 5.0 mg/dL

13 Which test utilizes Seliwanoff’s Reagent to detect fructose?

A Resorcinol Test
B Rubner's Test
C Hoesch Test
D SSA Test

14 What does the 'Trace' result represent in chemical urine testing?

A +/-
B 1+
C 2+
D 4+

15 Which enzyme deficiency is associated with Hereditary Fructose Intolerance?

A Galactokinase
B Aldolase B
C Lactase
D GALT

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