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Table 1 Clinical and laboratory data used to construct the FI-LAB

From: Standard laboratory tests to identify older adults at increased risk of death

Variablea

Low cut-off

High cut-off

Albumin (g/L)

32

45

AST (SGOT; IU/L)

8

33

BP, supine systolic (mmHg)

90

140

BP, supine diastolic (mmHg)

60

90

Calcium (mM)

2.3

2.7

Creatinine (μM)

53

106

Folate (nM)

11

57

Folate, RBC (nM)

376

1450

Glucose, fasting (mM)

3.9

6.1

Hemoglobin (g/L) b

135

180

Mean corpuscular volume (fL)

80

96

Phosphatase, alkaline (IU/L)

20

130

Phosphorus, inorganic (mM)

0.74

1.52

Potassium (mM)

3.8

5

Protein, total (g/L)

60

78

Sodium (mM)

136

142

TSH (μIU/L)

0.5

5

Thyroxine (T4; nM)

71

161

T4, Free (pM)

12

30

Urea (mM)

2.9

8.2

VDRL

0

0

Vitamin B12 (pg/L)

118

701

White blood cells (number/L)

1.8 × 109

7.8 × 109

  1. aNormal reference values for blood work were from Henry [18]. Reference values for normal blood pressure were from Jones et al. [19] and Pickering et al. [20]. bNote that normal references values for hemoglobin differed between the sexes so for women, the low cut-off was 120 g/L and the high cut-off was 160 g/L. AST, aspartate aminotransferase; BP, blood pressure; FI-LAB, Laboratory frailty indes; RBC, red blood cells; TSH, thyroid-stimulating hormone; VDRL, Venereal Disease Research Laboratory.
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BMC Medicine

ISSN: 1741-7015

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