Ten Cases of Biopsy-Proven Acute Tubulointerstitial Nephritis: Report from a Single Center in a Rural Area from 2008 to 2021

Table 1

Laboratory findings of case 1.

Urinalysis		Blood chemistry tests (cont.)
Gravity	1.016	Sodium	138 mmol/L
Protein	2+	Chloride	102 mmol/L
Sugar	2+	Potassium	3.4 mmol/L
Blood	Negative	Corrected calcium	10.0 mg/dL
Sediment		Phosphate	4.0 mg/dL
Red blood cells	<1/HPF	Total bilirubin	0.4 mg/dL
White blood cells	5–9/HPF	Aspartate aminotransferase	15 U/L
Urinary biochemical tests		Alanine aminotransferase	13 U/L
Daily urinary protein	0.9 g/24 hr	Lactate dehydrogenase	192 U/L
N-Acetylglucosaminidase	21.1 IU/L	Alkaline phosphatase	136 U/L
β2-Microglobulin	36.07 mg/L	Creatin kinase	31 U/L
Complete blood count		Total cholesterol	224 mg/dL
White blood cells	7100/mL	LDL cholesterol	162 mg/dL
Neutrophils	65%	Triglyceride	110 mg/dL
Eosinophils	11%	Glucose	97 mg/dL
Basophils	0%	Hemoglobin A1c	6.0%
Lymphocytes	7%	Serology
Monocytes	17%	C-reactive protein	1.71 mg/dL
Hemoglobin	11.2 g/dL	HBs antigen	Negative
Platelets	32.4 × 104/mL	Anti-HCV antibody	Negative
Coagulation tests		Immunoglobulin G	1723 mg/dL
PT-INR	1.06	Immunoglobulin A	194 mg/dL
APTT	30.4 sec	Immunoglobulin M	74 mg/dL
APTT, ctrl	32.5 sec	Immunoglobulin E	333 IU/mL
D dimer	1.4 μg/mL	Anti-streptolysin O	21 IU/mL
Blood chemistry tests		Complement 3	139 mg/dL
Total protein	8.0 g/dL	Complement 4	52 mg/dL
Albumin	4.2 g/dL	CH50	64.0 U/mL
Urea acid	4.1 mg/dL	Rheumatoid factor	33 IU/mL
Urea nitrogen	23.9 mg/dL	Anti-nuclear antibody	×40>
Creatinine	2.01 mg/dL	Anti-dsDNA-Ab	<10 U/cmL

PT-INR, prothrombin time-international normalized ratio; APTT, activated partial thromboplastin time; LDL, low-density lipoprotein; HBs, hepatitis B surface; HCV, hepatitis C virus; CH50, 50% hemolytic unit of complement; DNA, deoxyribonucleic acid.