Method comparison and bias estimation of point of care creatinine test

ISRCTN ISRCTN18805212
DOI https://doi.org/10.1186/ISRCTN18805212
Protocol serial number 31955
Sponsor Mid Yorkshire Hospitals NHS Trust
Funder Yorkshire & Humber Academic Health Science Network
Submission date
14/08/2017
Registration date
21/08/2017
Last edited
20/07/2018
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Urological and Genital Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
When patients need an x-ray they first need to have a blood test to check that their kidney function (estimated Glomerular Filtration rate [eGFR]) is normal. The blood test identifies patients with reduced kidney function as they are at risk of kidney injury as a result of the injection of x-ray dye. The aim of this study is to test whether a point of care test (POCT) is as accurate as a standard test to see whether it can be used to improve patient care.

Who can participate?
Patients aged over 18 who are already having a blood test (U&Es)

What does the study involve?
Participants undergo a standard blood test and extra blood tests using POCT devices using both venous (vein) and finger prick blood. The results of the blood tests are compared.

What are the possible benefits and risks of participating?
There are no direct benefits or risks involved with participating in the study.

Where is the study run from?
Pinderfields Hospital (UK)

When is the study starting and how long is it expected to run for?
February 2016 to November 2016

Who is funding the study?
Yorkshire & Humber Academic Health Science Network (UK)

Who is the main contact?
Miss Martine Harris

Contact information

Miss Martine Harris
Scientific

Rowan House
Pinderfields Hospital
Aberford Road
Wakefield
WF1 4DG
United Kingdom

ORCiD logoORCID ID 0000-0003-1924-3718

Study information

Primary study designInterventional
Study designNon-randomised; interventional and observational. Design type: Validation of outcome measures
Secondary study designNon randomised study
Study type Participant information sheet
Scientific titleMethod comparison and bias estimation of point of care creatinine tests against standard of care laboratory testing by enzymatic method
Study acronymBEPoCC
Study objectivesThe aim of this study to test whether a point of care test (POCT) for bloods is as accurate as a standard pathology test to enable it to be considered for use in radiology to improve patient care pathways. This will enable the trialists to develop a trial to evaluate the impact of POCT on a Radiology service.
Ethics approval(s)South East Scotland REC2, 13/06/2016, IRAS: 202240, REC ref: 16/SS/0077
Health condition(s) or problem(s) studiedSpecialty: Renal disorders, Primary sub-specialty: Renal disorders; UKCRC code/ Disease: Blood/ Other diseases of blood and blood-forming organs
InterventionAdditional blood tests are performed utilising POCT devices on outpatients routinely referred to phlebotomy for blood (U&E) testing as part of their standard pathway. Patients will be identified as attending for U&E’s in the phlebotomy department and those attending for other blood tests will be excluded. Patients identified will be recruited and consented for their agreement to have both a standard pathology blood test and a POCT (using both venous and capillary finger prick) blood. Accuracy using method comparison and bias estimation will be carried out on the patient samples in accordance with established laboratory standards.To ensure patients with a range of blood results are identified a modified Choyke screening questionnaire will be used to identify those with potentially reduced kidney function who would be the group most at risk in any future radiology based studies.
Intervention typeDevice
Phase
Drug / device / biological / vaccine name(s)
Primary outcome measure(s)

Renal function concordance measured as the difference between Estimated Glomerular Filtration Rate (eGFR) measurements calculated from serum creatinine measurements recorded by the standard pathology test and each point of care device (not POCT vs POCT); Timepoint(s): Day 1 only

Key secondary outcome measure(s)

1. Failure rates, recorded as the number of test analyses which do not produce a result from PoCT and laboratory tests at day 1
2. Appropriateness of the modified Choyke screening questionnaire to identify patients with reduced renal function, measured as the number of patients with no risk factors who have a reduced renal function identified (eGFR<40) at day 1

Completion date29/11/2016

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexAll
Target sample size at registration300
Key inclusion criteria1. Patients who are already having a blood test for U&Es (other assays will be excluded from the results)
2. The inclusion of non-English speaking patients will be made on a case-by-case basis
3. Those participants who are able to provide consent but are unable to read or write will be offered the opportunity for a witness to sign the participant consent sheet on their behalf
4. Over 18 years of age
Key exclusion criteria1. Under 18 years of age
2. Pregnant patients
3. Those unable to provide consent
Date of first enrolment07/09/2016
Date of final enrolment26/10/2016

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

Pinderfields Hospital
Wakefield
WF1 4DG
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryData sharing statement to be made available at a later date
IPD sharing planThe data sharing plans for the current study are unknown and will be made available at a later date.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 26/07/2018 Yes No
HRA research summary 28/06/2023 No No
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes

Editorial Notes

20/07/2018: Publication reference added.
23/08/2017: Internal edits.