Related Experiment Videos
A novel capillary collection method for obtaining current glycosylated haemoglobin levels in diabetic children
A R Shah1, J Challener, T S Elsey
1Department of Paediatrics, Addenbrooke's Hospital, Cambridge, UK.
Insights
A new at-home capillary blood collection method for glycosylated hemoglobin (HbA1c) testing simplifies diabetes management. This convenient approach improves patient experience and facilitates timely clinical decisions for diabetic children.
Area of Science:
- Clinical Chemistry
- Pediatric Endocrinology
- Diabetes Mellitus Management
Background:
- Glycosylated hemoglobin (HbA1c) is a key biomarker for long-term glycemic control in diabetes.
- Traditional blood collection for HbA1c assay requires clinic visits, which can be inconvenient and stressful for pediatric patients.
- Developing accessible and patient-friendly methods for monitoring HbA1c is crucial for effective diabetes care.
Purpose of the Study:
- To develop and validate a simple, at-home capillary blood collection method for HbA1c measurement.
- To assess the feasibility, accuracy, and patient acceptance of the novel blood collection technique.
- To evaluate the impact of this method on diabetes management in pediatric patients.
Main Methods:
- A novel method for collecting capillary blood samples at home using a single drop in a 2 ml tube.
- HbA1c analysis performed on the Diamat HPLC system with established assay precision.
- Comparison of simultaneously collected venous and capillary blood samples, as well as mailed vs. fresh venous samples.
- Patient and family feedback collected via questionnaire regarding ease of use and perceived benefits.
Main Results:
- High agreement between capillary and venous blood HbA1c measurements (n=32 diabetic children).
- No significant impact of transport conditions on sample integrity and HbA1c values (n=25 patients).
- High patient preference for the at-home method due to convenience and reduced trauma.
- All collected samples were suitable for analysis, with no reported collection difficulties.
- Availability of results led to changes in diabetes management in 40.5% of clinic visits.
Conclusions:
- The developed at-home capillary blood collection method is a reliable and convenient alternative for HbA1c monitoring in pediatric diabetes.
- This method enhances patient engagement and facilitates timely clinical decision-making, improving diabetes care.
- The technique is well-accepted by children and families, offering a less traumatic and more practical approach to blood sampling.
Abstract:
A simple method for collecting capillary blood for measurement of glycosylated haemoglobin (HbA1c) was developed that allows samples to be obtained at home and then mailed to the laboratory 2 weeks before a hospital visit. A single drop of blood is collected into a 2 ml plastic tube and sent for HbA1c assay on the Diamat HPLC system which has inter- and intra-assay coefficients of variation < 2.6 and < 1.2%, respectively. Results of simultaneously obtained venous and capillary samples in 32 diabetic children agreed well with each other. A separate study of 25 patients was performed to determine whether transport conditions affected the samples. Posted samples were compared with venous samples; again the values were in good agreement. This method is now used routinely in the diabetic clinic. Its value was determined by questionnaire in 40 children with age range 4-17 years. No family experienced difficulty collecting samples and all samples received were suitable for analysis. Children preferred this method to blood collection in the clinic as they felt it was less traumatic and more convenient. Seventy-nine percent of them understood its value in the long-term control of diabetes. In 40.5% of visits changes to management were made at the clinic due to the availability of the results.