Human Adipsin ELISA Kit

Code CSB-E14369h
Size 96T,5×96T,10×96T
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Product Details

Target Name
complement factor D (adipsin)
Alternative Names
Adipsin ELISA Kit; Adipsin/complement factor D ELISA Kit; Adn ELISA Kit; C3 convertase activator ELISA Kit; CFAD_HUMAN ELISA Kit; CFD ELISA Kit; Complement factor D ELISA Kit; complement factor D preproprotein ELISA Kit; D component of complement ELISA Kit; DF ELISA Kit; FactorD ELISA Kit; PFD ELISA Kit; Properdin factor D ELISA Kit
Uniprot No.
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates
Detection Range
0.312 ng/mL-20 ng/mL
0.078 ng/mL
Assay Time
Sample Volume
Detection Wavelength
450 nm
Research Area
Assay Principle
Intra-assay Precision (Precision within an assay): CV%<8%        
Three samples of known concentration were tested twenty times on one plate to assess.    
Inter-assay Precision (Precision between assays): CV%<10%        
Three samples of known concentration were tested in twenty assays to assess.      
To assess the linearity of the assay, samples were spiked with high concentrations of human adipsin in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.  
  Sample Serum(n=4)    
1:20 Average % 87    
Range % 82-91    
1:40 Average % 84    
Range % 80-88    
1:80 Average % 104    
Range % 98-108    
1:160 Average % 90    
Range % 85-94    
The recovery of human adipsin spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.  
Sample Type Average % Recovery Range    
Serum (n=5) 98 94-103    
EDTA plasma (n=4) 94 90-100    
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.  
ng/ml OD1 OD2 Average Corrected    
120 2.591 2.423 2.507 2.402    
60 1.964 1.890 1.927 1.822    
30 1.336 1.301 1.319 1.214    
15 0.842 0.836 0.839 0.734    
7.5 0.449 0.424 0.437 0.332    
3.75 0.329 0.339 0.334 0.229    
1.87 0.249 0.241 0.245 0.140    
0 0.108 0.102 0.105      
and FAQs
Store at 2-8°C. Please refer to protocol.
Lead Time
3-5 working days after you place the order, and it takes another 3-5 days for delivery via DHL or FedEx

This Human CFD ELISA Kit was designed for the quantitative measurement of Human CFD protein in serum, plasma, tissue homogenates. It is a Sandwich ELISA kit, its detection range is 0.312 ng/mL-20 ng/mL and the sensitivity is 0.078 ng/mL.

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Target Background

(From Uniprot)
Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway.
Gene References into Functions
  1. MASP-3 is the exclusive pro-factor D activator in resting blood: the lectin and the alternative complement pathways are fundamentally linked. PMID: 27535802
  2. disturbance of reciprocal relationships between adipsin and leptin in obesity is associated with the development of insulin resistance PMID: 28864895
  3. TZDs (pioglitazone, rosiglitazone, and ciglitazone) slow tumor cell growth in vitro and in vivo with decreases in cell proliferation and increases in PPARg and adipsin PMID: 28219679
  4. The strong association of PLIN1, CFD and ADIPOQ genes with adipogenesis prompted authors to study the influence the bone health status as evaluated by quantitative ultrasound (QUS) bone densitometer in a North Indian cohort. Overall, ADIPOQ (rs1501299 and rs3774261) and combined cluster of PLIN1 rs2304796 and rs2304795) and CFD (rs1683563) demonstrated correlation. PMID: 28189761
  5. our findings set up a novel mechanism for FABP4, adipsin and adiponectin through gut microbiota mediating expression in gut Paneth cells. PMID: 26687459
  6. Overall adipsin levels among male asbestos industry workers were significantly higher than among control subjects. PMID: 25840635
  7. Data indicate that a urinary protein, adipsin, was significantly increased in patients with preeclampsia. PMID: 24958499
  8. Study demonstrates that T2DM patients with beta cell failure are deficient in adipsin. PMID: 24995977
  9. Complement factor D (FD) is activated by its substrate through interactions outside the active site which lock the unbound native state into an ordered inactive conformation via the self-inhibitory loop in FD. PMID: 24598742
  10. We demonstrate novel secretion of adipsin and ASP by placental Hofbauer cells. PMID: 23956345
  11. Increased activation of the alternative complement pathway in vitreous was controlled by disease stage and genetic variation in the complement pathway, supporting a role for complement activation in macular degeneration disease pathogenesis. PMID: 22930722
  12. Anti factor D Fab fragment inhibits FD proteolytic function by interfering with macromolecular substrate access rather than by inhibiting FD catalysis. PMID: 22362762
  13. CFD regulates activation of the alternative complement pathway, which is implicated in age related macular degeneration pathogenesis. PMID: 22003108
  14. CFD may not play a major role in the genetic susceptibility to age-related macular degeneration. PMID: 21139680
  15. crystal structure of C3bB at 4 A and complex with factor D at 3.5 A; data show how factor B binding to C3b forms open "activation" state of C3bB; Factor D binds open conformation of factor B through a site distant from the catalytic center PMID: 21205667
  16. As adiponectin and adipsin levels in CSF did not correlate with their levels in plasma, it seems that there could be a secondary intrathecal synthesis of these adipocytokines in multiple sclerosis PMID: 19538214
  17. increased serum levels in patients with seasonal allergic rhinitis PMID: 19699327

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Involvement in disease
Complement factor D deficiency (CFDD)
Subcellular Location
Protein Families
Peptidase S1 family
Database Links

HGNC: 2771

OMIM: 134350

KEGG: hsa:1675

STRING: 9606.ENSP00000332139

UniGene: Hs.155597

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