CLIA Kit for Chorionic Gonadotropin (CG)

hCG; Human Chorionic Gonadotrophin


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


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

Matrix Recovery range (%) Average(%)
serum(n=5) 87-96 93
EDTA plasma(n=5) 78-102 83
heparin plasma(n=5) 85-103 95


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Chorionic Gonadotropin (CG) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Chorionic Gonadotropin (CG) 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 Chorionic Gonadotropin (CG) 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) 86-101% 89-103% 88-102% 81-103%
EDTA plasma(n=5) 95-105% 78-103% 94-102% 86-101%
heparin plasma(n=5) 78-102% 85-92% 80-94% 88-102%


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
Substrate A 1×10mL Substrate B 1×2mL
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 100µL Substrate Solution. Incubate 10 minutes at 37°C;
8. Read RLU value immediately.



Magazine Citations
Placenta The role of Sep (O-phosphoserine) tRNA: Sec (selenocysteine) synthase (SEPSECS) in proliferation, apoptosis and hormone secretion of trophoblast cells Pubmed: 23966103
International Journal of Nanomedicine Uptake and transport of pullulan acetate nanoparticles in the BeWo b30 placental barrier cell model Pubmed:30034233
Thyroid Defending effects of iodide transfer in placental barrier against maternal iodine deficiency Pubmed: 32791891
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