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Updated: Jun 19, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
Published on: January 28, 2014
Cardiometabolic risk factors assessed by a finger stick dried blood spot method
Sanjay Kapur1, Sonia Kapur, David Zava
1ZRT Laboratory, Beaverton, Oregon 97008, USA. skapur@zrtlab.com
Insights
Blood spot testing accurately measures key cardiometabolic risk factors like insulin, high-sensitivity C-reactive protein (hs-CRP), and triglycerides. This convenient method aids in screening and monitoring patients at risk for cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM).
Area of Science:
- Biochemistry
- Clinical Chemistry
- Biotechnology
Background:
- Cardiovascular and metabolic risk factors are crucial for preventing cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM).
- Blood spot technology provides an efficient and convenient approach for measuring these risk factors in at-risk populations.
- Accessible methods for assessing cardiometabolic risk are vital for effective clinical management strategies.
Purpose of the Study:
- To evaluate the efficacy of blood spot testing for measuring insulin, high-sensitivity C-reactive protein (hs-CRP), and triglycerides.
- To compare the accuracy of blood spot measurements against conventional serum sample analysis.
- To determine the utility of blood spot testing in cardiometabolic risk assessment.
Main Methods:
- Insulin and hs-CRP were quantified in dried blood spots and serum using ELISA kits.
- Triglyceride levels were determined enzymatically.
- Blood spot assays were optimized for improved accuracy and reduced turnaround time.
Main Results:
- Blood spot measurements showed strong correlations with serum levels for hs-CRP (r=0.99), triglycerides (r=0.94-0.95), and insulin (r=0.93-0.97).
- The optimized blood spot assays demonstrated high accuracy compared to serum analysis.
Conclusions:
- Blood spot testing is a reliable method for assessing insulin, hs-CRP, and triglycerides.
- This technology can be valuable for cardiometabolic screening and monitoring of patients at risk for CVD, T2DM, or metabolic syndrome.
Background:
Cardiovascular and metabolic risk factors are gaining attention as potential indicators for intervention in the prevention and treatment of cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM). Blood spot technology offers an efficient, convenient method to measure these risk factors in an at-risk population. Simple and convenient methods to assess cardiometabolic risk factors will allow clinicians to formulate treatment strategies for effective prevention and management of these conditions.
Method:
Insulin and high sensitivity C-reactive protein (hs-CRP) were measured in dried blood spot and corresponding serum samples using conventional commercial serum kits based on a direct sandwich ELISA technique. The triglyceride assay involved enzymatic hydrolysis of triglycerides by lipase to glycerol and free fatty acids. The glycerol produced was then measured by coupled enzyme reactions. Blood spot assays were modified from previously published methods to give improved accuracy and turnaround time.
Results:
Blood spot levels correlated well with serum levels of hs-CRP (r = 0.99), triglycerides (fasting, r = 0.95; nonfasting, r = 0.94), and insulin (fasting, r = 0.93; nonfasting, r = 0.97).
Conclusion:
Blood spot testing for insulin, hs-CRP, and triglycerides may be helpful in the cardiometabolic screening or monitoring of patients at risk of developing CVD, T2DM, or metabolic syndrome.
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