Study2018Open access

Fasting conditions: Influence of water intake on clinical chemistry analytes

Benozzi SF, Unger G, Campion A, Pennacchiotti GL

Biochemia medica · 5 citations

Review labels

Funding not disclosed

Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.

How it was studied

Design
Controlled clinical trial (classified by our AI screen)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Funding not disclosed

Publication

Published
2017-11-23 · Biochem Med (Zagreb) · vol. 28 · issue 1 · p. 010702
Publisher
Croatian society of medical biochemistry and laboratory medicine
Cited
15 citations · more than 64% of similar papers · 0.4× the field average
References
34 works
Access
Open access (free to publish) · CC-BY
Research areas
Clinical Laboratory Practices and Quality Control · Renal function and acid-base balance · Blood properties and coagulation
Keywords
Internal medicine, Chemistry, Creatinine, Uric acid, Triglyceride, Urea, Bilirubin, Cholesterol, Endocrinology, Phlebotomy, Hemoglobin, Medicine, Animal science, Biochemistry, Biology
MeSH
humans, water, cholesterol, l-lactate dehydrogenase, gamma-glutamyltransferase, triglycerides, fasting, drinking, chemistry, clinical, adult, middle aged, female, young adult

4 authors

From AR

  • Silvia Fabiana BenozziUniversidad Nacional del Sur
  • Gisela UngerUniversidad Nacional del Sur
  • Amparo CampionUniversidad Nacional del Sur
  • Graciela Laura PennacchiottiUniversidad Nacional del Sur

Abstract

Introduction

Currently available recommendations regarding fasting requirements before phlebotomy do not specify any maximum water intake volume permitted during the fasting period. The aim was to study the effects of 300 mL water intake 1 h before phlebotomy on specific analytes.

Materials and methods

Blood was collected from 20 women (median age (min-max): 24 (22 - 50) years) in basal state (T0) and 1 h after 300 mL water intake (T1). Glucose, total proteins (TP), urea, creatinine, cystatin C, total bilirubin (BT), total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides (Tg), uric acid (UA), high-sensitivity C-reactive protein, gamma-glutamyl transferase (GGT), aspartate-aminotransferase (AST), alanine-aminotransferase and lactate-dehydrogenase (LD) were studied. Results were analyzed using Wilcoxon test. Mean difference (%) was calculated for each analyte and was further compared with reference change value (RCV). Only mean differences (%) higher than RCV were considered clinically significant.

Results

Significant differences (median T0vs median T1, P) were observed for TP (73 vs 74 g/L, 0.001); urea (4.08 vs 4.16 mmol/L, 0.010); BT (12 vs 13 µmol/L, 0.021); total cholesterol (4.9 vs 4.9 mmol/L, 0.042); Tg (1.05 vs 1.06 mmol/L, 0.002); UA (260 vs 270 µmol/L, 0.006); GGT (12 vs 12 U/L, 0.046); AST (22 vs 24 U/L, 0.001); and LD (364 vs 386 U/L, 0.001). Although the differences observed were statistically significant, they were not indicative of clinically significant changes.

Conclusions

A water intake of 300 mL 1 h prior to phlebotomy does not interfere with the analytes studied in the present work.

Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).

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