Human FOLR1 Quantikine ELISA Kit

Catalog #: DFLR10 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
DFLR10

Control Products Available

QC92: Quantikine Immunoassay Control Set 724 for Human FOLR1

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All FOLR1 ELISAs

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Procedure

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Summary Recovery Linearity Data Examples Product Datasheets Preparation and Storage Background Related Research Areas

Human FOLR1 Quantikine ELISA Kit Summary

Assay Type

Solid Phase Sandwich ELISA

Format

96-well strip plate

Assay Length

4.5 hours

Sample Type & Volume Required Per Well

Cell Culture Supernates (50 uL), Serum (50 uL), EDTA Plasma (50 uL), Heparin Plasma (50 uL), Saliva (10 uL), Urine (10 uL), Human Milk (10 uL)

Sensitivity

14.9 pg/mL

Assay Range

46.9 - 3,000 pg/mL (Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma, Saliva, Urine, Human Milk)

Specificity

Natural and recombinant human FOLR1. This assay recognizes recombinant human FOLR1 in the presence of folic acid.

Cross-reactivity

< 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.

Interference

No significant interference observed with available related molecules.

Product Summary

The Quantikine Human FOLR1 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human FOLR1 in cell culture supernates, serum, plasma, saliva, urine, and human milk. It contains CHO cell-expressed recombinant human FOLR1 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human FOLR1 showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring human FOLR1.

Recovery

The recovery of FOLR1 spiked to levels throughout the range of the assay in various matrices was evaluated.

Sample Type	Average % Recovery	Range %
Cell Culture Media (n=4)	98	94-107
EDTA Plasma (n=4)	95	84-106
Heparin Plasma (n=4)	96	82-105
Serum (n=4)	96	84-107

Linearity

To assess the linearity of the assay, samples containing high concentrations of FOLR1 were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.

Scientific Data

N/A

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Human FOLR1 ELISA Standard Curve

Product Datasheets

Product Datasheet

COA

SDS

Preparation and Storage

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

Storage

Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: FOLR1

Folate Receptor 1 (FOLR1), also known as Folate Receptor alpha and Folate Binding Protein (FBP), is a 37-42 kDa protein that mediates the cellular uptake of folic acid and reduced folates. Dietary folates are required for many key metabolic processes including nucleotide and methionine synthesis, the interconversion of glycine and serine, and histidine breakdown. Mature FOLR1 is an N-glycosylated protein that is anchored to the cell surface by a GPI linkage. Human FOLR1 shares 83 percent amino acid sequence identity with mouse and rat FOLR1. FOLR1 is predominantly expressed on epithelial cells and is dramatically up-regulated on many carcinomas. It is critically required during early embryogenesis as shown in knockout mice which die in utero with gross morphological defects. FOLR1 is internalized to the endosomal system where it dissociates from its ligand before recycling to the cell surface. A soluble form of FOLR1 can be proteolytically shed from the cell surface into the serum and breast milk.

Long Name:

Folate Receptor 1

Entrez Gene IDs:

2348 (Human); 14275 (Mouse); 171049 (Rat)

Alternate Names:

Adult folate-binding protein; FBP; folate binding protein; folate receptor 1 (adult); Folate receptor 1; folate receptor alpha; Folate receptor, adult; Folbp1; FOLR; FOLR1; FR-alpha; KB cells FBP; MOv18; Ovarian tumor-associated antigen MOv18

Related Research Areas

⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Assay Procedure

Refer to the product for complete assay procedure.

Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.

Prepare all reagents, standard dilutions, and samples as directed in the product insert.
Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

100 µL Assay Diluent

Add 100 µL of Assay Diluent to each well.

50 µL Standard, Control, or Sample

Add 50 µL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours.
Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.