ELISA Kit for Calcitonin (CT)

CALCA; CALC1; CGRP-I; CGRP1; KC; CCP; PDN-21; Katacalcin; Calcitonin-Related Polypeptide Alpha; Calcitonin carboxyl-terminal peptide


This assay has high sensitivity and excellent specificity for detection of Calcitonin (CT).
No significant cross-reactivity or interference between Calcitonin (CT) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant Calcitonin (CT) and the recovery rates were calculated by comparing the measured value to the expected amount of Calcitonin (CT) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 86-99 96
EDTA plasma(n=5) 80-99 92
heparin plasma(n=5) 87-94 91


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Calcitonin (CT) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Calcitonin (CT) 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 Calcitonin (CT) 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) 79-96% 78-92% 84-98% 79-95%
EDTA plasma(n=5) 87-96% 81-96% 80-89% 95-105%
heparin plasma(n=5) 89-98% 92-103% 82-90% 80-97%


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 Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
Reagent Diluent 1×300µL Stop Solution 1×6mL
TMB Substrate 1×9mL Instruction manual 1
Wash Buffer (30 × concentrate) 1×20mL

Assay procedure summary

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



Magazine Citations
indian Journal of Experimental Biology Effect of consumption of fatty acids, calcium, Vitamin D and boron with regular physical activity on bone mechanical properties and corresponding metabolic hormones in rats Niscair: 13737
Toxicol Ind Health The effect of supplementation of calcium, vitamin D, boron, and increased fluoride intake on bone mechanical properties and metabolic hormones in rat PubMed: 22782709
The Journal of Clinical Endocrinology & Metabolism Interleukin-2 and Lanreotide in the Treatment of Medullary Thyroid Cancer: In Vitro and In Vivo Studies Pubmed: 23884781
Academic Journal Effect of whole body vibration on healthy rat plasma parameters Ebscohost: Source
Indian Journal of Experimental Biology Effect of consumption of fatty acids, nutrients and regular physical activity on bone mechanical properties in rats Pubmed:22439438
International journal of cardiology Differences in biochemical and genetic biomarkers in patients with heart failure of various etiologies. pubmed:27448535
7 Cell-matrix signals specify bone endothelial cells during developmental osteogenesis. pubmed:28218908
International Journal of Advanced Research in Biological Sciences Effects of fatty acids, nutrients and whole body vibration on bone histomorphometry, mechanical properties and metabolic parameters in male rat 10.22192/ijarbs.2017.04.04.018
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