10-20 red blood cells/hpf
0-2 white blood cell casts/lpf
2-5 hyaline casts/lpf
5-10 renal epithelial cells/hpf
unknown crystals
as well as the elements seen in the photomicrograph:
Scenario
A
20 year old male had four wisdom teeth removed. After the surgery, he developed
an abscess and was administered phenoxymethylpenicillin. The infection
diminished but he developed a fever and a mild skin rash after 2 weeks
of taking the antibiotic. His doctor ordered a urinalysis which came back
with the following results:
Physical / Chemical
Analysis
| Color | yellow | Protein | +1 | Blood | small |
| Appearance | +1 | Glucose | negative | Urobilinogen | negative |
| Specific Gravity | 1.025 | Ketones | negative | Nitrite | negative |
| pH | 6.5 | Bilirubin | negative | Leukocyte | small |
Microscopic Analysis
10-20 red blood cells/hpf
0-2 white blood cell casts/lpf
2-5 hyaline casts/lpf
5-10 renal epithelial cells/hpf
unknown crystals
as well as the elements seen in the
photomicrograph:
Questions
1. What are the formed elements in the picture?
2. List any abnormal results of this urinalysis.
3. What is the most probable diagnosis for this patient and why?
4. What do you think the unknown crystals are?
5. Why are there white blood cells without any bacteria present?
6. How will this patient be treated?