Blood Test Order and Culture Contamination

A Randomized Controlled Study of Blood Test Draw Order to Reduce Blood Culture Contamination

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03966534

Enrollment

970

Registered

2019-05-29

Start date

2018-09-01

Completion date

2019-02-28

Last updated

2019-05-29

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

Conditions

Blood Culture Contamination

Brief summary

A randomized partially controlled study to examine the effect of blood diversion into a heparin lithium tube on the incidence of blood culture contamination.

Interventions

OTHERBlood diversion

Diversion of initial blood obtained at venipuncture to biochemistry tube in order to try and reduce incidence of blood culture contamination

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

SINGLE (Investigator)

Intervention model description

Prospective partially blinded randomized study

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Age \> 18 * Presence in Emergency Room during extended office hours (0800-2000 on weekdays( * Clinical requirement for Blood culture and biochemistry tests from venepuncture

Exclusion criteria

* None

Design outcomes

Primary

Measure	Time frame	Description
Blood culture contamination	up to 7 days from obtaining blood culture	Growth of bacteria defined as blood culture contaminants (for example coagulase negative staphylococci in one bottle only).

Secondary

Measure	Time frame	Description
Patient length of stay	up to 3 months from arrival	Length of stay from arrival at Emergency room until discharge in hours

Countries

Israel

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 20, 2026