Microangiopathic hemolytic anemia in a female patient with systemic lupus erythematosus

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Figure 1
Peripheral smear. The yellow arrow indicates a schistocyte (hematoxylin and eosin stain, magnification × 400).

TABLE 1

Irregular patient laboratory results

Test	Patient value	Reference range
Hemoglobin, g/dL	11.8	12.3–15.3
Hematocrit, %	36.0	36.0–46.0
White blood cell count, × 10⁹/L	2.62	3.70–11.0
Absolute lymphocyte count, × 10⁹/L	0.55	1.00–4.00
Platelet count, × 10⁹/L	30	150–400
Serum creatinine, mg/dL	1.82	0.58–0.96
Alanine aminotransferase, U/L	65	7–38
Aspartate aminotransferase, U/L	148	13–35
C-reactive protein, mg/dL	7.3	< 0.9
Lactate dehydrogenase, U/L	1317	135–214
Reticulocyte count, %	8.7	0.4–2.0
Absolute reticulocyte count, × 10⁹/L	348	18–100
Haptoglobin, mg/dL	< 10	31–238
Fibrinogen, mg/dL	411	200–400
D-dimer, ng/mL	2900	< 500
Protein-to-creatinine ratio	1.7	< 0.2
Urine
Clarity	Cloudy	Clear
Hemoglobin, mg/dL	3+	Negative
Protein, mg/dL	≥ 300	Negative
White blood cell count, cells/high-power field	6–10	0–5
Red blood cell count, cells/high-power field	> 25	0–3
Protein-to-creatinine ratio	1.7	< .2
C3, g/dL	29	86–166
C4, g/dL	10	13–64
dsDNA, IU/mL	> 1000	< 30
ADAMTS13, %	54	> 60