Table 1.

Results of laboratory tests.

Variable	January 2017 diabetic ketoacidosis	April 2017 diabetic ketoacidosis	August 2017 outpatient clinic	Reference range
Osmolality, msom/KgH2O	313	323		275–295
Blood ketone, mmol/L	5.2	5.1		<0.6
pH	7.274	7.264		7.31–7.41
Absolute base excess	−10.7	−10.7
PCO2, mmHg	35.6	34.4		41–57
HCO3, mmol/L	16.4	15.7		22–26 (male)
Fasting glucose			272
Fasting C-peptide, ng/mL	0.48		0.26	0.9–4.3
Glucagon-stimulated C-peptide, ng/mL			0.41
HbA1c, %	13.1	13.2	13.4
Insulin, mU/mL			1.0	1.5–17
GAD65-Ab, U/mL	110		110	<1
IA2-Ab, U/mL	0.65		0.31	<1
Insulin antibody (%)	13.7			<10%
TSH, mU/L	0.985	1.176		0.35–5.50
Free T4, ng/dL	1.11	1.18		0.76–1.64
Anti-TPO Ab, IU/mL			18.81	<5.6
Cortisol, g/dL	24.45		14.08	5–23

HbA1c, glycated hemoglobin; GAD65-Ab, glutamic acid decarboxylase-65 antibody; IA2-A, islet antigen-2 antibody; TSH, thyroid stimulating hormone; Anti-TPO Ab, anti-thyroid peroxidase antibody.