Standard reference solutions
View Patent ↗Standard reference materials and related methods are described for quality testing and calibration of instruments used for the qualitative and quantitative determination of hemoglobin and glycated hemoglobin as well as other analytes of interest in animal tissue samples. The reference solutions of the disclosure utilize a synthetic cruor in combination with an Hb peptide chain.
1. A standard reference composition comprising a synthetic cruor and a synthetic Hb peptide chain, and further comprising glucose.
2. The standard reference composition of claim 1 , wherein the synthetic cruor has a main absorption maxima at a wavelength between about 450 to about 650 nrn.
3. The standard reference composition of claim 2 , wherein the synthetic cruor is selected from the group consisting of sulforhodamine B, sulforhodamine red, Congo Red, Mito Red, Acid Red, Fluorescent Red, Allura Red, Cresol Red, Amaranth, chiorophenol red, xylenol orange, sulforhodamine 101 and combinations thereof.
4. The standard reference composition of claim 1 , wherein the synthetic Hb peptide chain comprises 5 amino acids.
5. The standard reference composition of claim 4 , wherein the synthetic Hb peptide chain is glycated.
6. The standard reference composition of claims 1 or 5 , further comprising a preservative.
7. The standard reference composition of claim 1 or 5 , further comprising a chelator.
8. The standard reference composition of claim 1 , further comprising one or more analytes selected from the group consisting of microalbumin, ketone, and creatine.
9. The standard reference composition of claim 1 , wherein the synthetic Hb peptide chain includes UbAI.
10. The standard reference composition of claim 9 , wherein the synthetic Hb peptide chain includes HbAlc.
11. A method of quality control of a diagnostic device comprising:
providing to a diagnostic device an aliquot of a standard reference composition comprising a synthetic cruor and an Hb peptide;
wherein the synthetic cruor 15 present in a sufficient amount to provide the standard reference composition with a predetermined level of total hemoglobin, and the Hb peptide is present in a sufficient amount to provide the standard reference composition with a predetermined level of glycated hemoglobin;
quantitating in the diagnostic device the synthetic cruor in the standard reference composition;
quantitating in the diagnostic device the Hb peptide in the standard reference composition;
comparing the quantitations of the synthetic cruor and the Hb peptide in the standard reference with the predetermined amount of total hemoglobin and glycated hemoglobin to check the accuracy of the diagnostic device and
wherein the standard reference composition further comprises glucose in a sufficient amount to provide the standard reference composition with a predetermined amount of glucose and further comprising the steps of:
quantitating in the diagnostic device the glucose in the standard reference composition; and
comparing the quantitations of the glucose in the standard reference with the predetermined levels of the glucose to check the accuracy of the diagnostic device.
12. A method of quality control of a diagnostic device comprising:
providing to a diagnostic device an aliquot of a standard reference composition comprising a synthetic cruor and an Hb peptide;
wherein the synthetic cruor and the Hb peptide are present in a sufficient amount to provide the standard reference composition with a predetermined fraction of Hb peptide/synthetic cruor;
quantitating in the diagnostic device the fraction of Hb peptide/synthetic cruor in the standard reference composition;
comparing the quantitation of the fraction of Hb peptide/synthetic cruor in the standard reference with the predetermined fraction of Hb peptide/synthetic cruor to check the accuracy of the diagnostic device; and
wherein the standard reference composition further comprises glucose in a sufficient amount to provide the standard reference composition with a predetermined amount of glucose and further comprising the steps of:
quantitating in the diagnostic device the glucose in the standard reference composition; and comparing the quantitation of the glucose in the standard reference composition with the predetermined levels of the glucose to check the accuracy of the diagnostic device.
13. The method of claim 11 or 12 , wherein the standard reference composition further comprises an additional analyte selected from the group consisting of microalburnin, ketone, and creatine in a sufficient amount to provide the standard reference composition with a predetermined amount of the additional analyte and further comprising:
quantitating in the diagnostic device the additional analyte in the standard reference composition; and comparing the quantitation of the additional analyte in the standard reference composition with the predetermined amount of the additional analyte to check the accuracy of the diagnostic device.
14. The method of claim 11 or 12 , wherein providing an aliquot of a standard reference composition comprising a synthetic cruor and an Hb peptide comprises providing an HbAI peptide.
15. The method of claim 14 , wherein providing an UbAl peptide comprises providing an HbAlc peptide.