Human Vitamin D BP/GC/Vitamin D Binding Protein ELISA Kit PicoKine®

Vitamin D BP ELISA kit for Human

Human Vitamin DBP ELISA Kit PicoKine™ (96 Tests). Quantitate Human GC in cell culture supernatants, serum, plasma (heparin, EDTA) , saliva, urine and human milk. Sensitivity: 150pg/ml.

Product Info Summary

SKU: EK1641
Size: 96 wells/kit, with removable strips.
Reactive Species: Human
Application: ELISA
Sample Types: cell culture supernatants, serum, plasma (heparin, EDTA) , saliva, urine and human milk.

Product Name

Human Vitamin D BP/GC/Vitamin D Binding Protein ELISA Kit PicoKine®

View all Vitamin D BP ELISA kits

SKU/Catalog Number

EK1641

Size

96 wells/kit, with removable strips.

*Question: How many samples can I assay/run in this kit?

Description

Human Vitamin DBP ELISA Kit PicoKine™ (96 Tests). Quantitate Human GC in cell culture supernatants, serum, plasma (heparin, EDTA) , saliva, urine and human milk. Sensitivity: 150pg/ml.

Storage & Handling

Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)

Cite This Product

Human Vitamin D BP/GC/Vitamin D Binding Protein ELISA Kit PicoKine® (Boster Biological Technology, Pleasanton CA, USA, Catalog # EK1641)

Clonality of Antibodies

See Datasheet for details

Immunogen

Expression system for standard: NS0; Immunogen sequence: L17-L474

Sensitivity

<150 pg/ml

Assay Range

1.56 ng/ml - 100 ng/ml

Standard Dilution Instructions

serial dilution instructions image

Add 100ul of sample diluent in well #2-#8. Add 200ul standard stock solution to well #1, and serial dilute for well #2-#7 to make a standard curve row. Leave well #8 as blank See datasheet of EK1641 for more details

Cross-reactivity

There is no detectable cross-reactivity with other relevant proteins.

Reactive Species

EK1641 is reactive to GC in Human samples

Validated Sample Types

cell culture supernatants, serum, plasma (heparin, EDTA) , saliva, urine and human milk.

Application Guarantee

EK1641 is guaranteed for ELISA in Human by Boster Guarantee

See how Boster Bio validate our ELISA kits: ELISA Validation Information

Background of Vitamin D BP

Vitamin D-binding protein, also/originally known as gc-globulin (group-specific component), is a protein that in humans is encoded by the GC gene.The protein encoded by this gene belongs to the albumin gene family. It is a multifunctional protein found in plasma, ascitic fluid, cerebrospinal fluid and on the surface of many cell types. It binds to vitamin D and its plasma metabolites and transports them to target tissues.

Kit Components

Catalog Number Description Quantity
EK1641-CAP Anti-Human GC Pre-coated 96-well strip microplate 1
EK1641-ST Human GC Standard 2 vials, 100 ng/tube
EK1641-DA Human GC Biotinylated antibody (100x) 100ul
AR1103 Avidin-Biotin-Peroxidase Complex (100x) 100ul
AR1106-1 Sample Diluent 30ml
AR1106-2 Antibody Diluent 12ml
AR1106-3 Avidin-Biotin-Peroxidase Diluent 12ml
AR1104 Color Developing Reagent (TMB) 10ml
AR1105 Stop Solution 10ml
AR1106-5 Wash Buffer (25x) 20ml
PLA-SEA Adhesive plate sealers 4

*The kit components are not available for individual purchase.

Materials Required But Not Included In Kit

  • Microplate Reader capable of reading absorbance at 450nm.
  • Incubator.
  • Automated plate washer (optional).
  • Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
  • Multichannel pipettes are recommended for large amount of samples.
  • Deionized or distilled water.
  • 500ml graduated cylinders.
  • Test tubes for dilution.

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Validation Standard Curve O.D. At 450nm

Concentration (ng/ml)01.563.126.2512.52550100
O.D.0.0080.1030.1750.3160.5840.9921.6002.167

Data Example Images

Recommended Sample Dilution Ratios

According to our internal validation assays using this ELISA kit, to detect Vitamin D BP, Dilution ratio of 1:1, concentration in serum and plasma is 0-98 pg/ml..

Intra Assay Consistency & Inter Assay Consistency

We measured random samples of Human Vitamin D BP/GC/Vitamin D Binding Protein ELISA Kit PicoKine® within the same batch/lot to ensure the consistency of the kits' performances. ELISA intra assay consistency is measured using wells from the same plate/assay kit. ELISA inter assay consistency is measured using wells from different plates from the same batch production/lot.

Intra-Assay PrecisionInter-Assay Precision
Sample123123
n161616242424
Mean (pg/ml)3726120584992736461147849590
Standard deviation182.57940.522346.56236.991033.0272578.68
CV (%)4.9%7.8%4.7%6.5%9%5.2%

Reproducibility

We ensure reproducibility by testing three samples with differing concentrations of Vitamin D BP in ELISA kits from four different production batches/lots.

LotsLot 1 (pg/ml)Lot 2 (pg/ml)Lot 3 (pg/ml)Lot 4 (pg/ml)Mean (pg/ml)Standard DeviationCV (%)
Sample 13726381038493865381253.791.4%
Sample 21205812135116221035711543712.136.1%
Sample 349927481965275450855504331645.093.2%
*number of samples for each test n=16.

Gene/Protein Information For GC (Source: Uniprot.Org, NCBI)

Gene Name

GC

Full Name

Vitamin D-binding protein

Weight

52.918kDa

Superfamily

ALB/AFP/VDB family

Alternative Names

DBP; DBP/GC; DBP-MAF; DBPVDBG; EC 6.3.1.5; Gc; gc-globulin; Gc-MAF; GRD3; group-specific component (vitamin D binding protein); Group-specific component; hDBP; VDB; VDBG; VDBP; Vitamin D BP; vitamin D-binding alpha-globulin; vitamin D-binding protein GC DBP, DBP-maf, DBP/GC, GRD3, Gc-MAF, GcMAF, HEL-S-51, VDB, VDBG, VDBP GC vitamin D binding protein vitamin D-binding protein|epididymis secretory protein Li 51|gc protein-derived macrophage activating factor|gc-globulin|group-specific component (vitamin D binding protein)|vitamin D-binding alpha-globulin|vitamin D-binding protein-macrophage activating factor

*if product is indicated to react with multiple species, protein info is based on the gene entry specified above in "species".

For more info on GC, check out the GC Infographic

GC infographic

We have 30,000+ of these available, one for each gene! check them out.

In this infographic you will see the following information for GC: database IDs, super-family, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact us [email protected].

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9 Customer Q&As for Human Vitamin D BP/GC/Vitamin D Binding Protein ELISA Kit PicoKine®

Question

Q: if the enzyme conjugated Vitamin D BP antibodies are mixed with the substrate, will that convert the substrate into the enzymatic reaction product? Or the enzyme function is only activated when the antibody is attached with the Vitamin D BP antigen?

Verified Customer

Verified customer

Asked: 2020-09-07

Answer

A: The enzyme is always active. Avoid contaminating the substrate with enzyme prior to the incubation otherwise it compromises the assay with false positive signal.

Boster Scientific Support

Answered: 2020-09-07

Question

Q: can I use citrate plasma as samples in Human Vitamin D BP Picokine® ELISA Kit (Catalog # EK1641)?

Verified Customer

Verified customer

Asked: 2020-03-11

Answer

A: Chelating agents such as EDTA, Heparin and Citrate can irreversibly bind metal ions from the functional domain of Vitamin D BP causing degradation of its protein structure. Vitamin D BP may be denatured as a result and may compromise the assay's measurements. The chilating sites could also be too close to the epitopes required for detection and block the antigen antibody reaction. We have tested the Vitamin D BP ELISA, treating samples with a number of anticoagulants and decided that heparin or EDTA can be used for treatment of blood/plasma samples. Do not use other anticoagulents when collecting samples.

Boster Scientific Support

Answered: 2020-03-11

Question

Q: how many samples can be assayed in a Picokine® ELISA Kit?

Verified Customer

Verified customer

Asked: 2020-01-04

Answer

A: The Picokine® ELISA Kits will generally run a 7-point standard curve, non-specific binding wells, and 39 samples in duplicate. this may might differ by kit so please refer to each datasheet for details.

Boster Scientific Support

Answered: 2020-01-04

Question

Q: for how much duration can samples (cell cultures, serum, and plasma) be stored and still be stable for quantification Vitamin D BP using the EK1641 Human Vitamin D BP Picokine® ELISA Kit?

Verified Customer

Verified customer

Asked: 2019-09-24

Answer

A: Boster Bio does not assess sample stability. Variations in sample collection, processing, and storage may change the stabilityof samples. It is recommend to assay sample on priority basis collection when possible, or aliquot into single use volumes and store samples frozen. avoid repeat freeze-thaw cycles with the stored samples in order to limit protein degradation.

Boster Scientific Support

Answered: 2019-09-24

Question

Q: is there any online tool I can use to streamline the data analysis for my ELISA results?

Verified Customer

Verified customer

Asked: 2019-04-30

Answer

A: We have a web based ELISA curve fitting (4pl) and data analysis tool. Please give it a try: bosterbio.com/biology-research-tools/ELISA-data-analysis-online. You can also consult our article on ELISA data analysis: bosterbio.com/ELISA-data-analysis-instructions

Boster Scientific Support

Answered: 2019-04-30

Question

Q: Can Vitamin D BP ELISA Kits be used with tissue homogenates (or other non-validated sample types)?

Verified Customer

Verified customer

Asked: 2018-09-26

Answer

A: Unfortunately, Boster Bio has not routinely validated tissue homogenates as a sample type for ELISA kits. This does not mean that ELISA kits are not suitable for other sample types than we have tested: it means further investigation is needed. One will need to perform a spike and recovery study to determine if an unvalidated sample type will work with a particular kit. To perform a spike and recovery experiment, one should divide a sample into two aliquots. In one of the aliquots, the user should spike in a known amount of the kit standard. a dilution series is performed comparing the spiked versus the unspiked sample. Generally, samples with expected recovery and linearity between 80-120% are considered acceptable. This method can be used to validate any sample type that has not been evaluated by Boster Bio. for a more detailed spike and recovery protocol, please contact technical support.
Note: acceptable ranges should be determined individually by each laboratory. Additionally, technical support can help determine if a buffer component is not compatible with a given ELISA kit. please see the Citations tab on the product webpage for peer-reviewed papers utilizing a wide range of sample types. We also have an innovator's reward program where if the user validates our ELISA kits in applications or samples previously not validated by Boster Bio or other users, and share such information with us by submit a review, we will reward the user's efforts with a free antibody or ELISA kit from our catalog. Biocompare.com will also give $20 Amazon giftcard as an additional reward, if the review is submitted there as well.

Boster Scientific Support

Answered: 2018-09-26

Question

Q: how to analyze ELISA data? I have performed Vitamin D BP level in human milk.

B. King

Verified customer

Asked: 2018-06-26

Answer

A: we recommend you this article on ELISA data analysis. bosterbio.com/ELISA-data-analysis-instructions. Boster also provides a free tool that you can use to analyze ELISA data. bosterbio.com/biology-research-tools/ELISA-data-analysis-online

Boster Scientific Support

Answered: 2018-06-26

Question

Q: how to thaw whole blood sample for Vitamin D BP ELISA after freezing?

Verified Customer

Verified customer

Asked: 2017-02-17

Answer

A: do not freeze and thaw whole blood. erythrocytes are fragile and, if frozen and thawed, will undergo hemolysis rendering the samples useless. To keep your blood samples to test Vitamin D BP for a later time, you should let the blood clot in glass tubes and separate the serum to freeze for later analysis.

Boster Scientific Support

Answered: 2017-02-17

Question

Q: What is the optimal O.D. value for Vitamin D BP ELISA kit? I used your Vitamin D BP ELISA on serum samples. For my positive control, I received an O.D. value of 0.826, while my negative control received a value of 0.136. I obtained both of these controls from the ELISA kit, where your kit's typical data shows O.D. values much higher than my positive control and your background is lower. My samples O.D. values are around 0.225 and the highest is only 0.357. is it safe to say these samples contain Vitamin D BP even though the O.D. values are not very high?

Verified Customer

Verified customer

Asked: 2015-11-11

Answer

A: The absolute O.D. values may change according to incubation time. The more you incubate the higher the O.D. values are going to be. a point of focus should be is whether your sample O.D. values are statistically significantly higher than your blank values. regarding your protocol, you could extend your development time in the substrate incubation step to obtain higher O.D. values, as long as your negative controls' O.D. values are not increasing faster in relation to your positive controls. normally, a sample with O.D. value 2 standard deviations higher than your negative controls can be considered positive. We calculate the sensitivity of this ELISA kit by changeing cutoff O.D. value, calculated as the average of 20 negative controls plus 2 standard deviations of the 20 negative controls, into a concentration. in other words, when we claim this Vitamin D BP ELISA kit to have sensitivity of 150pg/ml, that means the minimum amount of Vitamin D BP that can be declared/interpreted as positive by the above standard is 150pg/ml.

Boster Scientific Support

Answered: 2015-11-11

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