The Human CTX (Beta Crosslaps) ELISA Kit is a cutting-edge tool for the precise measurement of CTX levels in human serum, plasma, and cell culture supernatants. This advanced kit boasts exceptional sensitivity and specificity, guaranteeing dependable and consistent results, making it perfect for various research endeavors.CTX, or Beta Crosslaps, is a key marker of bone resorption, providing valuable insights into bone turnover and bone health.
Monitoring CTX levels is crucial for understanding conditions such as osteoporosis, bone fractures, and metabolic bone diseases, aiding in the development of targeted treatments and interventions. With its superior performance and broad applicability, the Human CTX (Beta Crosslaps) ELISA Kit is an indispensable tool for researchers and clinicians alike in the pursuit of elucidating bone metabolism and advancing patient care.
Product Name:
Human beta-CTx (Beta Crosslaps) ELISA Kit
Product Code:
AEFI00370
Size:
96T
Alias:
β-CTx, Beta Crosslaps
Detection method:
Sandwich ELISA, Double Antibody
Application:
β-CTx ELISA Kit allows for the in vitro quantitative determination of β-CTx concentrations in serum, plasma, tissue homogenates and other biological fluids.
Sensitivity:
< 4.688pg/ml
Range:
7.813-500pg/ml
Storage:
2-8°C for 6 months
Note:
For Research Use Only
Recovery:
Matrices listed below were spiked with certain level of β-CTx and the recovery rates were calculated by comparing the measured value to the expected amount of β-CTx in samples.
Matrix
Recovery range(%)
Average(%)
serum(n=5)
85-101
94
EDTA plasma(n=5)
85-103
94
heparin plasma(n=5)
93-102
99
Linearity:
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of β-CTx and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample
1:2
1:4
1:8
serum(n=5)
86-101%
88-98%
86-100%
EDTA plasma(n=5)
82-97%
88-101%
91-97%
heparin plasma(n=5)
80-92%
84-98%
82-99%
CV(%):
Intra-Assay: CV<8% Inter-Assay: CV<10%
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
Sample Type
Protocol
Serum
If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Plasma
Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid
Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant
Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell lysates
Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Tissue homogenates
The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Tissue lysates
Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk
Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.
Amy McGuire et al.
Measurement of energy availability in highly trained male endurance athletes and examination of its associations with bone health and endocrine function
