Honors Urinalysis Home
Middle Aged Woman
Case Study
Teenage Boy Case
Study
I was just wondering if it was possible for you to explain what the following means in a urine analysis:
1. Blood = Large (normal/abnormal? possible reasons if abnormal?)
2. pH = 8 (normal/abnormal? possible reasons if abnormal?)
3. Protein = 100++ (normal/abnormal? possible reasons if abnormal?)
4. Urobilinogen = 12mg (normal/abnormal? possible reasons if abnormal?)
5. Nitrite = Negative (normal/abnormal? possible reasons if abnormal?)
6. Leucocytes (normal/abnormal? possible reasons if abnormal?)
A 35 year old woman went to the doctor complaining of fatigue, shortness of breath, and dark urine. Her skin was very pale, and the whites of her eyes were slightly yellow. She reported recently having a sinus infection which was treated with penicillin. Urinalysis results are:
| Color |
dark red/brown |
Protein |
100mg/dL (2+) |
Blood |
large |
| Appearance |
clear |
Glucose |
negative |
Urobilinogen |
12.0 EU |
| Sp.
Gravity |
1.020 |
Ketones |
negative |
Nitrite |
negative |
| pH |
8.0 |
Bilirubin |
negative |
Leukocyte |
negative |
Microscopic
amorphous 2+
hemosiderin granules present
Upon receiving the urinalysis results, the physician orders a blood test for haptoglobin which comes back less than 5 mg/dL (reference range = 26-185 mg/dL).
Questions
1. From what condition is the patient most likely suffering?
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Answer
2. If the patient shows
signs of
jaundice, and there is urobilinogen present, then why is the bilirubin
negative?
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Answer
3. Would you expect to see the following formed element? Why or why not?
4. Is it possible to have
amorphous from
the two major crystal types below? Why or why not? What is in this
photomicrograph which indicates it definitely could not be from this
patient?
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Answer
5.
Is it possible the protein is a false positive or at least higher than
it should be? Should a confirmatory test for protein be performed?
6. Foods such as red beets cause urine to be dark red. How can the laboratory professional rule this out as a source of false positive on the stix?
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Answer
6. Foods such as red beets cause urine to be dark red. How can the laboratory professional rule this out as a source of false positive on the stix?
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for the
Answer