Serum Calcium Assessment in Patients

The assessment of serum calcium was routinely conducted for all of the enrolled patients within 24 h after admission. Levels of serum calcium were measured by Arsenazo III colorimetry (Beckman Coulter, Brea, America) using fresh samples, which had a functional sensitivity of 0.01 mmol/L. It was unadjusted for serum albumin and the reference interval of serum calcium for our laboratory ranged from 2.11 to 2.52 mmol/L. Hypocalcemia was defined as a serum calcium level ≤ 2.12 mmol/L [17 (link)].

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Zhang J., Ali A., Liu Y., Peng L., Pu J., Yi Q, & Zhou H. (2023). Additive prognostic value of serum calcium to the ESC risk stratification in patients with acute pulmonary embolism. Thrombosis Journal, 21, 20.

Publication 2023

Arsenazo III

Arsenazo iii Calcium Colorimetry Hypocalcemia Patients Sensitivity Serum Serum albumin

Corresponding Organization : University of Electronic Science and Technology of China

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Variable analysis

independent variables

Not explicitly mentioned

dependent variables

Serum calcium levels

control variables

Serum calcium measured by Arsenazo III colorimetry (Beckman Coulter, Brea, America) using fresh samples
Functional sensitivity of 0.01 mmol/L
Serum calcium unadjusted for serum albumin
Reference interval of serum calcium for the laboratory ranged from 2.11 to 2.52 mmol/L
Hypocalcemia defined as a serum calcium level ≤ 2.12 mmol/L

controls

No positive or negative controls were explicitly mentioned in the provided information.

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