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A powerful innovation in protein quantitation

Invitrogen ProQuantum immunoassays are designed for easy-to-run, high-performance, target-specific protein detection, with no proprietary instrument to purchase. Utilizing proximity-based amplification technology, ProQuantum assays offer the analyte specificity of antibody–antigen binding with the signal detection and amplification capabilities of qPCR to achieve a highly sensitive assay. ProQuantum assays can also typically detect lower levels of protein with lower sample consumption than traditional methods.

Watch the on-demand webinars to get the technical details on the ProQuantum platform and its applications.

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Download the product brochure or watch the instructional video

ProQuantum high-sensitivity immunoassays brochure

To learn more about the technology and benefits of ProQuantum high-sensitivity immunoassays, how easy it is to run an assay and how they can help you in your research, download the ProQuantum high-sensitivity immunoassays brochure or watch the instructional video by clicking the appropriate button below:

To learn more, email us at and we will connect you with a representative who can help or sign up to receive new target release announcements.

Ordering ProQuantum immunoassays

ProQuantum immunoassays benefits at-a-glance:

  • High-sensitivity—detect low levels of proteins with greater sensitivity than traditional methods (Figure 1)
  • Broad dynamic range—≥5 logarithmic units, minimizing sample dilutions to ensure they fall within the range
  • Small sample consumption—use 2–5 μL of sample (instead of 75 μL for triplicate wells with other methods)
  • Fast, easy workflow—typically 2 hours from sample to answer, no wash steps, and a single 1-hour incubation
  • No proprietary instrument to purchase—runs on any real-time PCR instrument
  • Includes intuitive cloud-based software—comprehensive data analysis and statistical group–wise comparison
ProQuantum High-Sensitivity Human Assay standard curves
 Click image to enlarge

Figure 1. Standard curve for Invitrogen ProQuantum High-Sensitivity Human IFNγ, IL-1β, IL-8, and IL-6 immunoassay kits (red) shows larger dynamic range and improved separation at the low end of the curve for greater sensitivity than normal and ultrasensitive ELISAs (blue).

ProQuantum immunoassays utilize a matched pair of target-specific antibodies each conjugated to a DNA oligonucleotide. This platform leverages the sensitivity and large dynamic range of Applied Biosystems TaqMan real-time PCR technology. During antibody–analyte binding, the two DNA oligos are brought into close proximity, which then allows for ligation of the two strands and subsequent creation of template strand for amplification (Figure 2).

Figure 2. ProQuantum immunoassay schematic. (A) Antibody-conjugates binding to target (1-hr incubation). (B) Ligation and amplification of signal (in qPCR instrument).

Watch the “How to run a ProQuantum assay” instructional video for simple steps to run the assay at your lab bench.

Use the software (Figure 3) to access customized plate and assay setup instructions as well as obtain results including robust statistical group–wise comparisons.

Figure 3. Intuitive software for easy and comprehensive data analysis.

Thermo Fisher Scientific is committed to designing our products with the environment in mind—it’s part of how we enable our customers to make the world healthier, cleaner, and safer. This fact sheet provides the rationale behind the environmental claim that Invitrogen ProQuantum Immunoassay Kits generate less waste and have more sustainable packaging than traditional ELISA kits. To learn more download the green features fact sheet

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Request the next target release

We are continuously developing new ProQuantum immunoassay kits. You can contribute to our product development roadmap. Send us an email to let us know what protein targets you would like to see next or join our email list to receive target release announcements.

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Need a custom ProQuantum assay? Lot reservation? Special bulk packaging?

How to run the Invitrogen ProQuantum High Sensitivity Immunoassay kit

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We provide custom target development services of your chosen protein targets and immunoassay platform, as well as, lot reservations and custom packaging for bulk orders.

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Performance guarantee

If an Invitrogen immunoassay does not perform as described on our data sheet, we will replace the product at no cost to you, or if you prefer, we will provide you with a credit for future purchase.*

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We're here to help

Our team of field application specialists are trained in immunoassay workflows. We can help you choose an assay or configure a panel, optimize an experiment, troubleshoot and more – face to face or on the phone at no cost.

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