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Table 1 Summary of main laboratory investigations at admission and follow-up

From: Anti-synthetase syndrome: a rare and challenging diagnosis for bilateral ground-glass opacities—a case report with literature review

Lab

Admission

3-months follow-up

Reference value

Hemoglobin

9.8

12.7

12–16 g/dL

WBC

10.3

6.2

4.5–11.0 K/uL

Platelets

285

325

140–450 K/uL

BUN

4

5–25 mg/dL

Creatinine

0.32

0.61–1.24 mg/dL

Glomerular filtration rate

 > 60

 > 60

ALT

46

14

10–60 U/L

AST

57

16

10–42 U/L

ESR

49

22

0–15 mm/h

CRP

3.24

0.45

0.00–0.74 mg/dL

Rheumatoid factor

 < 20

 < 20 U/mL

Anti-nuclear antibodies

2.09

0.0–0.90

C3

106

85–170 mg/dL

C4

22.2

16–40 mg/dL

JO-1 antibody

191

0–40 AU/mL

c-ANCA

 < 1.20

 < 1.20

p-ANCA

0.0

0–19 U/mL

Anti-dsDNA

 < 1:10

 < 1:10

Scleroderma (scl-70) antibody

3.0

0–40 AU/mL

Anti-Smith antibody

1.0

0–40 AU/mL

Anti-Sjögren's-syndrome-related Ag A

5.0

0–40 AU/mL

Anti-Sjögren's-syndrome-related Ag B

1.0

0–40 AU/mL

Anti-RNP antibody

8.0

0–40 AU/mL

Anti-cyclic citrullinated antibodies

3.0

0–19 units

Legionella antigen, urine

Negative

Negative

Streptococcus pneumonia antigen

Negative

Negative

Beta-d-glucan

Negative

Negative

Procalcitonin

0.11

 < 0.50 ng/mL

Aldolase

39.5

4.5

1.5–8.1 u/L

Creatine kinase

326

58

22–232 iu/L