Application of a Direct Flow Cytometric Erythrocyte Immunofluorescence Assay in Dogs with Immune-Mediated Hemolytic Anemia and Comparison to the Direct Antiglobulin Test
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Bibliographic record
Abstract
A direct flow cytometric erythrocyte immunofluorescence assay (FC) was developed and compared with the direct antiglobulin test (DAT) for detection of erythrocyte-bound immunoglobulin (IgG and IgM) and complement (C3) in dogs with immune-mediated hemolytic anemia (IMHA). Tests were performed on erythrocytes from 13 healthy nonanemic dogs and from 13 anemic dogs with IMHA. The FC and DAT were negative for erythrocyte-bound immunoglobulin in all healthy dogs. The FC was negative for erythrocyte-bound C3 in 12 healthy dogs and positive in 1 healthy dog, and the DAT was negative for C3 in all healthy dogs. Of the 13 IMHA dogs tested for erythrocyte-bound IgG, 12 were positive using the FC and 7 were positive using the DAT. Sensitivity for the detection of erythrocyte-bound IgG in the 26 dogs was 92% for FC and 53% for DAT. Specificity for detection of erythrocyte bound IgG for FC and DAT was 100%. The addition of IgM and/ or C3 did not increase the sensitivity for FC or DAT. In this group of dogs, the FC provided a more rapid, cost-effective, sensitive, objective method to quantitate erythrocyte-bound immunoglobulin and/or complement compared with the currently used DAT.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it