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Table 2 Laboratory data according to serum fT3 concentration

From: Low triiodothyronine syndrome and selenium deficiency - undervalued players in advanced heart failure? A single center pilot study

Characteristics

Group ALow fT3 < 3.10 pmol/L

(n = 9)

Group B Normal fT3

≥ 3.10 pmol/L

(n = 50)

p-value

TSH (1 day), μIU/ml

2.3 (0.98–3.0)

1.5 (0.9–1.9)

0.1984

TSH (3 day), μIU/ml

2.2 (1.3–3.0)

1.5 (1.2–2.0)

0.1049

fT3 (1 day), pmol/l

2.7 (±0.7)

4.4 (±0.7)

<0.0001

fT3 (3 day), pmol/l

2.6 (±0.8)

4.3 (±0.6)

<0.0001

fT4 (1 day), pmol/l

16.9 (±2.9)

18.1 (±3.0)

0.2455

fT4 (3 day), pmol/l

16.5 (±3.3)

17.6 (±2.4)

0.2803

fT3/fT4 ratio (1 day)

0.16 (±0.04)

0.25 (±0.05)

<0.0001

fT3/fT4 ratio (3 day)

0.16 (±0.06)

0.25 (±0.04)

<0.0001

rT3, ng/ml

0.18 (±0.09)

0.22 (±0.09)

0.1854

NT-proBNP (1 day), pg/ml

7330.0 (5243.0–28,033.0)

2714.5 (1762.3–5968.3)

0.0016

NT-proBNP (3 day), pg/ml

6909.0 (5143.0–21,934.5)

2027. (790.5–3378.6)

<0.0001

hsCRP (1 day), mg/l

10.2 (4.5–37.0)

4.1 (1.8–9.3)

0.0369

hsCRP (3 day), mg/l

21.0 (3.6–46.0)

5.1 (1.5–8.6)

0.0269

WBC (1 day), 10^3

7.3 (5.5–9.7)

7.9 (6.3–9.3)

0.5692

WBC (3 day), 10^3

7.6 (5.4–10.6)

7.1 (6.1–7.7)

0.4932

Selenium, μg/l

58.2 (31.7–71.0)

59.7 (47.9–71.2)

0.4735

Creatinine (1 day), μmol/l

109.0 (77.5–121.5)

103.0 (81.5–123.0)

0.8720

eGFR/CKD-EPI/ (1 day)

66.0 (52.0–81.0)

64.0 (50.0–84.0)

0.7553