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Table 2 Laboratory markers stratified by lactate levels

From: Severe hyperlactatemia in the emergency department: clinical characteristics, etiology and mortality

Characteristic

Overall

Lactate < 2 mmol/L

Lactate 2—3.99 mmol/L

Lactate 4—9.99 mmol/L

Lactate ≥ 10 mmol/L

p-value

Complete blood count

N = 26,680

n = 15,735

n = 7,680

n = 2,799

n = 466

 

Haemoglobin, g/dL

11.1 (9.3—12.8)

11.0 (9.2—12.6)

11.4 (9.5—13.0)

11.3 (9.3—13.2)

11.1

(8.9—13.0)

 < 0.01

Platelet count, 103/uL

237 (172—314)

241 (178—319)

234 (168—310)

223 (150—303)

197 (118—292)

 < 0.01

White blood cell count, 103/uL

9.5 (6.8—13.3)

9.0 (6.6—12.5)

10.1 (7.2—14.2)

10.6 (7.5—15.3)

11.4 (7.8—17.0)

 < 0.01

Blood Chemistry test

N = 26,342

n = 15,505

n = 7,592

n = 2,781

n = 464

 

Creatinine, mg/dL

1.01 (0.76—1.54)

0.99 (0.74—1.55)

1.00 (0.76—1.45)

1.10 (0.81—1.70)

1.35 (0.93—2.16)

 < 0.01

HCO3-, mEq/L

21.9 (19.3—24.3)

22.5 (20.0—24.7)

21.7 (19.3—24.1)

19.4 (16.6—22.1)

14.0 (10.2—18.8)

 < 0.01

 

N = 21,180

n = 11,893

n = 6,323

n = 2,521

n = 443

 

Total bilirubin, mg/dL

0.60 (0.40—1.10)

0.50 (0.40—0.90)

0.70 (0.40—1.40)

0.80 (0.40—1.90)

1.10 (0.50—3.50)

 < 0.01

Cardiac marker

N = 5,738

n = 3,257

n = 1,597

n = 766

n = 188

 

Troponin T, ng/L

38 (15—96)

36 (15—93)

35 (14—88)

47 (18—133)

81 (27—231)

 < 0.01

  1. g/dL Grams per Deciliter, μL Microliter, mg/dL Milligrams per Deciliter, mmHg Millimeters of Mercury, mEq/L Milliequivalents per Liter, ng/L Nanograms per Liter, mmol/L Millimoles per Liter