Table 1.

Laboratory findings

Assessment	Results	Reference range
Arterial blood gas (room air)
pH	7.175	7.35–7.45
pCO2 (Torr)	17.9	35–45
pO2 (Torr)	117.1	80–100
${\text{HCO}}_3^{‐}$ (mEq/L)	6.4	22–26
Base excess (mEq/L)	−19.4	0 ± 2
Biochemistry
Plasma glucose (mg/dL)	344	73–109
Hemoglobin A1c (%)	7.6	4.6–6.2
Immunoreactive insulin on admission (μU/mL)	2.74	≤18.7
Serum C‐peptide on admission (ng/mL)	0.33	0.80–2.50
Urine C‐peptide (µg/day)	≤1.5	29.2–167
β‐hydroxybutyrate (μmol/L)	8,794	0–76
Acetoacetate (μmol/L)	1,815	13–69
Amylase (U/L)	45	37–124
Lipase (U/L)	82	11–59
Elastase‐1 (ng/dL)	348	<300
Free T4 (ng/mL)	1.3	0.90–1.70
Thyroid‐stimulating hormone (μIU/mL)	2.8	0.50–5.00
Immunological tests
Anti‐GAD antibody (U/mL)	<5.0	<5.0
Anti‐IA‐2 antibody (U/mL)	<0.6	<0.6
Insulin autoantibody, U/mL	<0.4	<0.4
Anti‐ZnT8 antibody (U/mL)	<10.0	<15.0
Anti‐thyroglobulin antibody (IU/mL)	<10	<28
Anti‐thyroid peroxidase antibody (IU/mL)	<9	<16
Infection
SARS‐CoV‐2 PCR	(−)	(−)
Anti‐SARS‐CoV‐2 IgM, (C.O.I.)	0.2	<1.0
Anti‐SARS‐CoV‐2 S‐IgG (AU/mL)	3.2	<1.0
Anti‐SARS‐CoV‐2 N‐IgG (C.O. I.)	<0.1	<1.0
HLA‐DNA typing
DRB1*04:05:01/13:02:01
DQB1*04:01:01/06:04:01

C.O.I., cut off index; GAD, glutamic acid decarboxylase; HLA, human leukocyte antigen; IA‐2, insulinoma‐associated protein‐2; IgG, immunoglobulin G; N, nucleocapsid protein; PCR, polymerase chain reaction; S, spike protein; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2; ZnT8, zinc transporter 8.