Table 1:

Laboratory data at presentation in a 15-year-old female with altered mental status.

	Patient	Reference range
Chemistry
Sodium, mmol/L	139	133–145
Potassium, mmol/L	4.5	3.6–5.2
Chloride, mmol/L	105	96–108
Bicarbonate, mmol/L	21	20–28
Blood urea nitrogen, mg/dL	19	6–20
Creatinine, mg/dL	0.79	0.5–1
Glucose, mg/dL	117	60–99
Calcium, mg/dL	9.1	9–10.4
Magnesium, mg/dL	1.2	1.6–2.5
Phosphorus, mg/dL	4.8	2.7–4.5
Albumin, g/dL	3.3	3.5–5.2
Alanine aminotransferase, U/L	27	0–35
Aspartate aminotransferase, U/L	32	0–35
Alkaline phosphatase, U/L	71	70–230
Hematology
Hemoglobin, g/dL	10.6	11.2–15.7
Hematocrit, %	32	34–45
White blood cells, thou/uL	7.8	4–10
Platelets, thou/uL	287	160–370
Sedimentation rate, mm/h	19	0–20
Thyroid
TSH (uIU/mL)	<0.01	0.27–4.2
Free T4, ng/dL	3.6	0.9–1.7
T3, ng/dL	405	80–200
Cardiac
NT-pro-BNP, pg/mL	2839	0–450
Cerebrospinal fluid
Nucleated cells, U/L	10	0–7
Red blood cells, U/L	520	0–5
Glucose, mg/dL	95	50–80
Protein, mg/dL	31	10–41

Italics indicate potentially clinically relevant values outside the reference range