750-P: Afinion HbA1c Dx Point-of-Care Test Is Accurate to Diagnose Diabetes in CLIA-Waived Settings (2024)

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Volume 70, Issue Supplement_1

1 June 2021

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P: Clinical Therapeutics / New Technology—Other Therapeutic Agents| June 01 2021

MARTA CLENDENIN;

MARTA CLENDENIN

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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KENNETH KUPFER;

KENNETH KUPFER

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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KYLE S. FORTNER;

KYLE S. FORTNER

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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RANDIE R. LITTLE;

RANDIE R. LITTLE

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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TIMOTHY S. BAILEY;

TIMOTHY S. BAILEY

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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KRISTIN N. CASTORINO;

KRISTIN N. CASTORINO

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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DOUGLAS S. DENHAM;

DOUGLAS S. DENHAM

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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EDWARD KERWIN;

EDWARD KERWIN

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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MARC MICKIEWICZ;

MARC MICKIEWICZ

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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AMY J. NATION;

AMY J. NATION

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RICHARD C. SAN GEORGE

RICHARD C. SAN GEORGE

San Diego, CA, Columbia, MO, Escondido, CA, Santa Barbara, CA, San Antonio, TX, Medford, OR, Nashville, TN, Oviedo, FL, Carlsbad, CA

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Diabetes 2021;70(Supplement_1):750-P

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MARTA CLENDENIN, KENNETH KUPFER, KYLE S. FORTNER, RANDIE R. LITTLE, TIMOTHY S. BAILEY, KRISTIN N. CASTORINO, DOUGLAS S. DENHAM, EDWARD KERWIN, MARC MICKIEWICZ, AMY J. NATION, RICHARD C. SAN GEORGE; 750-P: Afinion HbA1c Dx Point-of-Care Test Is Accurate to Diagnose Diabetes in CLIA-Waived Settings. Diabetes 1 June 2021; 70 (Supplement_1): 750–P. https://doi.org/10.2337/db21-750-P

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No point of care HbA1c (A1c) assays are CLIA waived for use in diagnosing diabetes. The accuracy of the Abbott Afinion HbA1c Dx (Afinion) was evaluated for this purpose. Operators with no laboratory training (N=21) tested fingerstick (FS) and venous (V) whole blood samples from subjects at 7 CLIA waived sites with 2 Afinion analyzer models (AS100 and Afinion 2). Operators self-trained on use of the Afinion using only materials that are provided when the test is purchased. A portion of each subject’s V sample was tested with a recognized comparative method (CM) at an NGSP Secondary Reference Laboratory (SRL). Consistent with FDA requirements for total error of A1c test systems, the percentage of Afinion results within an Allowable Total Error (ATE) zone of ±6% of the CM result was calculated, as well as the bias at 6.5% A1c. A total of 1,229 subjects with A1c values spanning the Afinion assay measuring range were enrolled. For the Afinion 2, 95.04% (95% lower confidence limit, LCL: 93.33%) of FS and 94.86% (95% LCL: 93.12%) of V results were within the ATE zone. For the AS100, 94.22% (95% LCL: 92.38%) and 93.36% (95% LCL: 91.41%) of Afinion results were within the ATE zone for FS and V samples, respectively. The bias at 6.5% A1c for the Afinion 2 was -0.13% (-0.008% A1c units) for FS and 0.01% (0.000% A1c units) for V samples. For the AS100, the bias was 0.62% (0.040% A1c units) and 1.13% (0.073% A1c units) for FS and V samples, respectively. No operator effects and no differences between the Afinion and CM results that could potentially impact clinical decision making were observed in this study. In subjects with unreported hemoglobin variants (detected by CM), 16/16 FS and 15/16 V Afinion results were within the ATE zone when compared to a second NGSP certified method at the same SRL. These data support the use of Afinion in CLIA waived settings to diagnose diabetes.

Disclosure

M. Clendenin: Employee; Self; Abbott. A. J. Nation: None. R. C. San george: Other Relationship; Self; Abbott. K. Kupfer: Employee; Self; Abbott. K. S. Fortner: Employee; Self; Abbott. R. R. Little: None. T. S. Bailey: Consultant; Self; Abbott Diabetes, LifeScan, Novo Nordisk, Sanofi, Research Support; Self; Abbott, Abbott Diabetes, Biolinq, Capillary Biomedical, Inc., Dexcom, Inc., Eli Lilly and Company, Kowa Research Institute, Inc., Lexicon Pharmaceuticals, Inc., Livongo, Medtronic, Medtrum Technologies, Novo Nordisk, REMD Biotherapeutics, Sanofi, Sanvita, Viacyte, Inc., vTv Therapeutics, Zealand Pharma A/S, Speaker’s Bureau; Self; BD, Medtronic, Sanofi. K. N. Castorino: Consultant; Self; Dexcom, Inc., Research Support; Self; Abbott Diabetes, Abbott Laboratories, Dexcom, Inc., Drawbridge Health, Inc., Lilly Diabetes, Medtronic, Novo Nordisk Inc. D. S. Denham: None. E. Kerwin: Consultant; Self; Amphastar, AstraZeneca, Connect Biopharma, GlaxoSmithKline plc., Mylan N. V., Novartis Pharmaceuticals Corporation, Sunovion Pharmaceuticals Inc., Theravance Biopharma, Speaker’s Bureau; Self; Chiesi USA, Inc. M. Mickiewicz: None.

© 2021 by the American Diabetes Association

2021

Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. More information is available at http://www.diabetesjournals.org/content/license.

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750-P: Afinion HbA1c Dx Point-of-Care Test Is Accurate to Diagnose Diabetes in CLIA-Waived Settings (2024)

FAQs

How accurate is afinion HbA1c? ›

Total error (fingerstick): 2.87–4.75% The POCT evaluated is precise across its measuring range using both fingerstick and venous whole blood. The total error is well under the accepted quality requirement of ≤ 6%.

What is afinion A1c point of care? ›

Immediate point of care HbA1c results for efficient monitoring of glycemic control. The Afinion™ HbA1c assay is a test for quantitative determination of glycated hemoglobin (HbA1c) in human whole blood, used to monitor metabolic control in patients with diabetes.

What is the afinion HbA1c measuring range? ›

The Afinion HbA1c measuring range is 4.0-15.0% HbA1c. The HbA1c results are displayed in 0.1% intervals. The hemoglobin measuring range is 6.0-20.0 g/dL.

What is the principle of afinion HbA1c? ›

Test Principle: Afinion™ HbA1c is a fully automated boronate affinity assay. The test Cartridge contains all of the necessary reagents. The sample is collected with the integrated sampling device and the Test Cartridge is placed in the cartridge chamber of the analyzer.

Can a HbA1c test be wrong? ›

Also, the low sensitivity of HbA1c in the diagnosis of early diabetes, which is approximately 0.5, further limits its usefulness as a diagnostic tool. The high specificity of the test (0.95) makes the HbA1c test unlikely to be a false positive, but it may often provide a result that is falsely negative.

How accurate is the point of care A1C test? ›

The POC method has a sensitivity of 88.6% and specificity of 96.3% in diagnosing diabetes (Table 1). Conclusions: Per ADA guidelines, the POC method is not recommended to be used to diagnose diabetes. Based on our findings 10.3% of individuals would be missed if one used the POC method to diagnose diabetes.

Is A1c a Clia waived test? ›

Point of care A1C methods are small instruments or unitized devices that run single samples. There are four POC, CLIA-waived devices cleared for use in the United States. As CLIA-waived devices, highly trained personnel are not required for operation. All four methods are NGSP certified.

How long does afinion HbA1c take? ›

Short assay time in 3 minutes.

How much does A1c Poct cost? ›

POC-A1c presented a mean cost of US$10,503.48 per individual and an effectiveness of 0.35, vs.

What is the error code 103 on afinion HbA1c? ›

103 Hemoglobin too low Consult the Afinion HbA1c Package Insert. 104 Hemoglobin too high Consult the Afinion HbA1c Package Insert. 105 HbA1c too low Consult the Afinion HbA1c Package Insert.

What is the error code 210 on afinion HbA1c? ›

Information code 210 will be displayed and no test result obtained if the Test Cartridge is too cold when used. Do not freeze. The Afinion™ HbA1c Test Cartridges can be stored in unopened foil pouches at room temperature for 90 days.

How long are afinion HbA1c controls stable once the vials are opened? ›

Afinion™ HbA1c Control

Opened controls are stable for 60 days.

How often are A1C tests wrong? ›

The test that doctors most often rely on to detect a person's risk for prediabetes and type 2 diabetes—the hemoglobin A1c (A1c) blood test—too often delivers a poor reading, thereby missing the diagnosis in nearly three out of four at-risk individuals, according to research presented at the Endocrine Society meeting in ...

How long does afinion hba1c take? ›

Short assay time in 3 minutes.

Are store bought A1C tests accurate? ›

How accurate is it? While research on these over-the-counter A1C tests is scarce, this 2010 study showed that of 177 people using the kit, more than 93 percent saw their A1C results come back at a range within 13.5 percent of the lab value.

How often is A1C inaccurate? ›

Depending on the machine, a single A1C test can have up to a 0.5% margin of error, which means the “true” value might be 0.5% higher or lower than the measured A1C. For example, if a lab report shows an A1C value of 7.0%, the actual A1C value might range from 6.5% and 7.5%.

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