Cancer Diagnosis Program | Biorepositories and Biospecimen Research Branch

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Heparinized "microtainer" tube evaluated for collection of capillary blood.

Author(s): Norling LL, Smith CH, Landt M

Publication: Clin Chem, 1984, Vol. 30, Page 810-1

PubMed ID: 6713651 PubMed Review Paper? No

Purpose of Paper

Conclusion of Paper

Studies

1. Study Purpose

   The purpose of this study was to determine the effects of collection tube type on hemolysis, plasma yield and 8 clinical chemistry analytes.

   Summary of Findings:

   The mean sodium concentration was 138 mmol/L when specimens were collected in Caraway tubes versus 136 mmol/L when collected in microtainer tubes (p<0.05), but this difference was not clinically relevant. A significant loss of CO2 was observed in specimens collected in microtainer tubes with storage prior to analysis of longer than 4 h (p<0.001). A non-significant reduction in hemolysis was observed in specimens collected in microtainer rather than Caraway tubes. Collection tube type had no effect on plasma yield, potassium, carbon dioxide, chloride, glucose, urea, total bilirubin, or creatinine.

   Biospecimens

   • Bodily Fluid - Blood
   • Bodily Fluid - Plasma

   Preservative Types

   • None (Fresh)

   Diagnoses:

   • Not specified

   Platform:

   Analyte	Technology Platform
   Electrolyte/Metal	Flame emission photometry
   Electrolyte/Metal	Clinical chemistry/auto analyzer
   Gas	Clinical chemistry/auto analyzer
   Small molecule	Clinical chemistry/auto analyzer
   Small molecule	Spectrophotometry
   Carbohydrate	Clinical chemistry/auto analyzer
   Morphology	Hematology/ auto analyzer
   Morphology	Macroscopic observation

   Pre-analytical Factors:

   Classification	Pre-analytical Factor	Value(s)
   Biospecimen Acquisition	Type of collection container/solution	Caraway tube Microtainer tube
   Storage	Storage duration	Less than 4 h Less than 6 h

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