Glucose levels are stable in stored blood and plasma samples of cultured female African catfish (Clarias gariepinus)

  • Onyinyechukwu Ada AginaEmail author
  • Chidozie Nwabuisi Okoye
  • Susan O. Dan-Jumbo
Original Article


Glucose is utilized by fish as one of the sources of energy. It is a physiological parameter useful in the determination of the general health condition of cultured fish. The aim of this study was to determine the stability of plasma and blood glucose concentration, stored at different temperatures (4 °C and 30 °C) for 72 h. Two (2) milliliters of blood was collected via the caudal abdominal venipuncture of 10 female catfishes purchased. The fish were 8 months of age and were kept in plastic ponds at the Faculty of Veterinary Medicine, University of Nigeria. Blood was collected in blood tubes containing K2EDTA. Plasma was harvested from 1 mL of K2EDTA blood sample following centrifugation. Glucose concentration was determined using the Accu-Chek glucometer. Whole blood and plasma were analyzed immediately (0 h), and then after storage at 4 °C and 30 °C at 24 h, 48 h, and 72 h. Comparisons to the whole blood samples (0 h) stored at 30 °C revealed a significant (p < 0.05) decrease in blood glucose concentration from the 24th hour to the 72nd hour. At 4 °C, blood glucose concentration was stable for up to 72 h. Plasma glucose level was stable for 24 h, and significantly (p < 0.05) decreased from the 48th hour. When compared with the 0 h plasma glucose concentration at 4 °C, no significant (p > 0.05) differences in the 24-h, 48-h, and 72-h plasma glucose concentration were observed. Therefore, whole blood and plasma stored at 4 °C for 72 h and plasma stored at 30 °C for 24 h can be used for glucose determinations in the female African catfish.


Glucometer Glucose Plasma Whole blood 30 °C 4 °C Female catfish 



This study was supported by the personal contributions of all authors. No grant was made available for this study. We would like to thank Rebec farms and the Veterinary Clinical students on rotation in the Department of Veterinary Theriogenology and Reproductive diseases laboratory for their assistance.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The research was carried out in accordance with the Ethics and Regulations guiding the use of animals and animal products, as approved by the University of Nigeria Senate committee on Medical and Research ethics.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Veterinary Pathology and Microbiology, Faculty of Veterinary MedicineUniversity of NigeriaNsukkaNigeria
  2. 2.Department of Veterinary Obstetrics and Reproductive Diseases, Faculty of Veterinary MedicineUniversity of NigeriaNsukkaNigeria
  3. 3.Division of Developmental Biology, The Roslin InstituteUniversity of EdinburghEdinburghUK

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