Cellular controls for glycated hemoglobin Hb A1c
First Claim
1. A method for preparing a cellular hemoglobin A1c (Hb A1c) control comprising:
- (a) selecting a sample of red blood cells with at least one desired feature from a suitable subject;
(b) washing the sample;
(c) processing the washed sample to remove white blood cells;
(d) preserving Hb A1c molecules in said sample, wherein said red blood cells are intact and said Hb A1c molecules are unmodified;
(e) washing the sample of (d); and
(f) adjusting the Hb A1c level to the predetermined level thereby producing a cellular Hb A1c control, wherein the level of Hb A1c of the control is substantially stabilized and detectable.
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Abstract
Disclosed are cellular hemoglobin A1c (Hb A1c) normal and abnormal (high) controls for use in detecting Hb A1c levels. The present invention also relates to methods for generating cellular Hb A1c controls using red blood cells and methods for using the cellular controls. The present invention encompasses several methods for the preparation of Hb A1c cellular controls including: (1) a boronate method where the glycation occurs non-specifically; (2) a stabilized diabetic blood method where the glycation occurs specifically on Hb A1c, and (3) the glycation of normal blood method that is achieved by controlling conditions such that glycation occurs predominantly on Hb A1c. These methods produce cellular Hb A1c controls with desirable stability and that can be detected on a variety of instruments.
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Citations
27 Claims
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1. A method for preparing a cellular hemoglobin A1c (Hb A1c) control comprising:
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(a) selecting a sample of red blood cells with at least one desired feature from a suitable subject; (b) washing the sample; (c) processing the washed sample to remove white blood cells; (d) preserving Hb A1c molecules in said sample, wherein said red blood cells are intact and said Hb A1c molecules are unmodified; (e) washing the sample of (d); and (f) adjusting the Hb A1c level to the predetermined level thereby producing a cellular Hb A1c control, wherein the level of Hb A1c of the control is substantially stabilized and detectable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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- 18. A cellular hematology control for Hb A1c comprising intact red blood cells having a predetermined level of Hb A1c, wherein the Hb A1c is unmodified, and the level is substantially stabilized.
Specification