Table 1 Laboratory investigation on admission

Serum electrolytes

  Sodium

mEq/L

128

135–145

  Potassium

mEq/L

2.4

3.5–4.5

  Chloride

mEq/L

115

98–107

  Calcium (ionized)

mmol/L

1.09

1.01–1.31

Kidney function

  Blood urea nitrogen

mg/dL

20.5

7–16.8

  Serum creatinine

mg/dL

1.8

0.3–0.6

  Estimated glomerular filtration rate^a

mL/min per 1.73 m ²

25

89–165

Urinalysis

  Color

Yellow

  Clarity

Cloudy

Clear

  pH

6.5

4.5–8

  Specific gravity

< 1.005

1.005–1.030

  Glucose

Negative

Negative

  Blood

1+

Negative

  Ketones

Negative

Negative

  Protein

1+

Negative

  Urobilinogen

3.2

3.2–16

  Bilirubin

Negative

Negative

  Leukocyte esterase

2+

Negative

  Nitrite

Positive

Negative

Urine culture

  Microorganism

colony-forming unit /mL

Escherichia coli > 100,000

No growth