title: Reference intervals for whole blood viscosity using the analytical performance-evaluated scanning capillary tube viscometer.
abstract: OBJECTIVE
  This study was performed to establish the reference intervals for whole blood viscosity (WBV) using the analytical performance-evaluated scanning capillary tube viscometer (SCTV).
  
  
  METHODS
  The analytical performance of the SCTV was evaluated using three different levels of QC materials and sixty human EDTA-blood samples. To establish the reference intervals for WBV, 297 healthy individuals (123 men and 174 women) were selected from 1083 subjects.
  
  
  RESULTS
  Within-day precisions with QC materials and human whole blood and between-day precisions with QC materials were below 5.0%, 6.6% and 8.0% in CVs at all shear rates, respectively. Comparison tests between the SCTV and the Brookfield viscometer showed a significant correlation (R(2)=0.972, p<0.001). The reference intervals for WBV in healthy men were 3.66-5.41cP at 300s(-1) and 23.15-36.45cP at 1s(-1) while those in women were 3.27-4.32cP at 300s(-1) and 18.20-27.36cP at 1s(-1), respectively.
  
  
  CONCLUSIONS
  Using the analytical performance-evaluated SCTV, the reference intervals for WBV were established in healthy adults, which could be beneficial to the clinical utility of WBV in the aspect of appropriate modalities for the improvement of blood viscosity.
authors: Hemorheology Research Institute, Chonbuk National University, Jeonbuk 516-756, South Korea.
authors: J M
authors: JM
authors: Jung
authors: Department of Mechanical Design Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea; Department of Bionanosystem Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea.
authors: D H
authors: DH
authors: Lee
authors: Department of Bionanosystem Engineering, Chonbuk National University, Jeonbuk 516-756, South Korea.
authors: K T
authors: KT
authors: Kim
authors: Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
authors: M S
authors: MS
authors: Choi
authors: Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
authors: Y G
authors: YG
authors: Cho
authors: Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
authors: H S
authors: HS
authors: Lee
authors: Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea.
authors: S I
authors: SI
authors: Choi
authors: Division of Cardiology, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea. Electronic address: medorche@jbnu.ac.kr.
authors: S R
authors: SR
authors: Lee
authors: Department of Laboratory Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine, Chonbuk National University and Hospital, Jeonbuk 516-712, South Korea. Electronic address: dskim@jbnu.ac.kr.
authors: D S
authors: DS
authors: Kim
mesh_terms: D000328:Adult; D001800:Blood Specimen Collection / Q000295:instrumentation* / Q000379:methods*; D001809:Blood Viscosity / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011786:Quality Control; D012016:Reference Values
keywords: Hematocrit; Reference intervals; Scanning capillary tube viscometer; Whole blood viscosity