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Table 1 Laboratory data on admission

From: Acquired Fanconi syndrome in patients with Legionella pneumonia

 

Normal range

Patient 1

Patient 2

BUN

8–22 mg/dL

17

41

Serum creatinine

0.71–1.20 mg/dL

0.88

2.23

Serum sodium

136–147 mEq/L

121

143

Serum potassium

3.6–5.0 mEq/L

3.4

3.5

Serum phosphorus

2.5–4.3 mg/dL

1.3

2.0

Serum uric acid

< 7.0 mg/dL

2.4

2.7

Serum chloride

101–109 mEq/L

83

107

Serum CPK

56–244 IU/L

670

2,330

Bicarbonate

22.0–26.0 mEq/L

20.8

15.7

Anion gap

12 ± 2 mEq/L

15.2

20.3

Serum osmolarity

285–295 mOsm/kg

255

N.D.

Urinary osmolarity

mOsm/kg

673

N.D.

ADH

0.3–4.2 pg/mL

1.7

N.D.

Proteinuria

Negative; (−)

(2+)

(2+)

Leukocyturia

Negative; (−)

(−)

(−)

Urinary pH

4.8–7.5

6.5

5.5

Urinary glucose

Negative; (−)

(3+)

(2+)

Urinary RBC

0–4/HPF

10–19/HPF

10–19/HPF

%TRP

81–90%

54.0

51.0

FEK

10.0–20.0%

18.4

33.1

FEUA

5.5–11.0%

18.7

42.8

β2-MG

< 250 μg/L

80,397

110,556

NAG

< 7.0 U/L

18.0

19.7

  1. Definition of the abbreviations: ADH antidiuretic hormone, BUN blood urea nitrogen, CPK creatine phosphokinase, FEK fractional excretion of potassium, FEUA fractional excretion of uric acid, HPF high power field, NAG N-acetyl-β-D-glucosaminidase, N.D. not determined, RBC red blood cell, %TRP tubular reabsorption of phosphate, WBC white blood cell, β2-MG β2-microglobulin. Conversion factors for units: BUN in mg/dL to mmol/L, × 0.357, creatinine in mg/dL to mmol/L, × 88.4, phosphorus in mg/dL to mmol/L, × 0.3229, uric acid in mg/dL to μmol/L, × 59.48, and ADH in pg/mL to pmol/L, × 0.923. No conversion is necessary for sodium, potassium, chloride, CPK, bicarbonate, anion gap, and osmolarity.
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BMC Nephrology

ISSN: 1471-2369

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