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Evaluation of an Internal Hospital Practice: The Effect of Altered Test Tubes Sampling Order on Blood Culture Contamination Rates

Evaluation of an Internal Hospital Practice: The Effect of Altered Sampling Protocol on Blood Culture Contamination Rates: An Open, Randomized, Prospective Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03088865
Enrollment
756
Registered
2017-03-23
Start date
2017-09-01
Completion date
2018-09-06
Last updated
2020-07-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Septicemia

Brief summary

Implementation of the initial specimen diversion technique, in which the first milliliter of the venipuncture sample is not injected into the culture bottle, led to a significant reduction in blood culture contamination rates. This technique is based on the assumption that the skin plug aspirated during venipuncture is a major source of contaminating bacteria. One such diversion method is aspirating the first blood volume into a blood collection tube. It has, however, been suggested that regular blood collection tubes carry contaminants from the tube's stopper into the blood cultures drawn afterwards, thereby increasing contamination rates. The aim of this trial is to examine the effect of aspirating the first blood volume into a regular blood collection tube on blood culture contamination rate.

Interventions

DIAGNOSTIC_TESTaspirating first blood volume into a regular blood collection tube

order of blood drawing

Sponsors

Hadassah Medical Organization
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adults evaluated in the emergency room or as inpatients for suspected sepsis or having sepsis and from whom the treating physician plans to take, in the same venous puncture, blood cultures and additional blood tests (blood count and/or blood chemistry).

Exclusion criteria

* None

Design outcomes

Primary

MeasureTime frameDescription
Blood culture contamination rate7 daysA blood culture contamination is defined as growth in a single set of coagulase-negative Staphylococcus, Micrococcus, Viridans group Streptococcus, Propionibacterium acne, Corynebacterium sp (diphtheroids) or Bacillus sp.

Countries

Israel

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 1, 2026