ELISA Kit for S100 Calcium Binding Protein A12 (S100A12)

CGRP; P6; CAAF1; CAGC; ENRAGE; MRP6; Calgranulin C; Calcium-binding protein in amniotic fluid 1; Extracellular newly identified RAGE-binding; Migration inhibitory factor-related 6


This assay has high sensitivity and excellent specificity for detection of S100 Calcium Binding Protein A12 (S100A12).
No significant cross-reactivity or interference between S100 Calcium Binding Protein A12 (S100A12) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant S100 Calcium Binding Protein A12 (S100A12) and the recovery rates were calculated by comparing the measured value to the expected amount of S100 Calcium Binding Protein A12 (S100A12) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 79-97 89
EDTA plasma(n=5) 80-103 81
heparin plasma(n=5) 83-96 91


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level S100 Calcium Binding Protein A12 (S100A12) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level S100 Calcium Binding Protein A12 (S100A12) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of S100 Calcium Binding Protein A12 (S100A12) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 88-101% 85-98% 78-88% 88-101%
EDTA plasma(n=5) 80-94% 88-101% 85-92% 80-102%
heparin plasma(n=5) 81-101% 84-92% 83-104% 91-98%


The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.



Magazine Citations
Inflammation Research Correlation of human S100A12 (EN-RAGE) and high-sensitivity C-reactive protein as gingival crevicular fluid and serum markers of inflammation in chronic periodontitis and type 2 diabetes Pubmed: 24378957
Dig Dis Sci The Circulating Level of Soluble Receptor for Advanced Glycation End Products Displays Different Patterns in Ulcerative Colitis and Crohn’s Disease: A Cross-Sectional Study PubMed: 25757448
The Journal of Clinical Endocrinology & Metabolism Low Endogenous Secretory Receptor for Advanced Glycation End-Products Levels Are Associated With Inflammation and Carotid Atherosclerosis in Prediabetes Pubmed:26885882
Nutrition, Metabolism, and Cardiovascular Diseases High intake of dietary advanced glycation end-products is associated with increased arterial stiffness and inflammation in subjects with type 2 diabetes. pubmed:28958695
The Journal of Clinical Endocrinology & Metabolism HbA1c Identifies Subjects With Prediabetes and Subclinical Left Ventricular Diastolic Dysfunction. pubmed:28973588
Journal of Immunology Research A Granulocyte-Specific Protein S100A12 as a Potential Prognostic Factor Affecting Aggressiveness of Therapy in Patients with Juvenile Idiopathic Arthritis Doi: 10.1155/2018/5349837
Al-Azhar Assiut Medical Journal The role of serum S100A12 (calgranulin C) as a diagnostic marker in Egyptian patients with irritable bowel syndrome and ulcerative colitis Doi: 10.4103/AZMJ.AZMJ_52_18
Acta Diabetologica Analysis of S100A12 plasma levels in hyperlipidemic subjects with or without familial hypercholesterolemia Pubmed: 30963307
Cells 1 h Postload Glycemia Is Associated with Low Endogenous Secretory Receptor for Advanced Glycation End Product Levels and Early Markers of Cardiovascular …
Biomolecules . Multimarker Approach to Identify Patients with Coronary Artery Disease at High Risk for Subsequent Cardiac Adverse Events: The Multi-Biomarker Study Pubmed: 32549327
Mediators of Inflammation Alarmins HMGB1, IL-33, S100A7, and S100A12 in Psoriasis Vulgaris
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