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Validation of low-volume blood collection tubes for routine hematologic testing
Giuseppe Lippi1, Loredana Martini2, Barbara Cortivo2
1University of Verona, Section of Clinical Biochemistry, Verona, Italy.
Journal of Medical Biochemistry
|January 29, 2025
Summary
Low-volume blood collection tubes are reliable for routine hematologic testing. These tubes reduce risks like iatrogenic anemia and hemolysis, making them a safe alternative to standard tubes.
Area of Science:
- Hematology
- Clinical Pathology
- Laboratory Medicine
Background:
- Low-volume blood tubes offer benefits like reduced iatrogenic anemia and hemolysis.
- Clinical validation of these tubes is essential before widespread adoption.
Purpose of the Study:
- To establish the reliability of routine hematologic testing using low-volume blood tubes.
- To compare the performance of low-volume tubes against standard tubes.
Main Methods:
- Blood samples were collected from 44 participants into standard 3.0 mL K2EDTA tubes (full and underfilled) and 0.25-0.5 mL K2EDTA low-volume tubes.
- Hematologic parameters were analyzed using a Sysmex XN-10 hematology analyzer.
Main Results:
- Statistically significant differences were observed in multiple parameters between low-volume tubes and standard tubes.
- No clinically significant variations were found in the low-volume tubes.
- Clinically significant bias was noted in hematocrit, MCV, and MCHC in the underfilled standard tubes.
Conclusions:
- K2EDTA low-volume blood tubes can safely replace standard tubes.
- These tubes help prevent insufficient sample collection.
- They facilitate blood collection in patients with difficult veins and reduce complications.
