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EnzyChrom™ Histamine Assay Kit


  • For quantitative determination of histamine in food, beverage and agricultural products.

Key Features

  • Fast and sensitive. Use of 20 µL sample. Linear detection range 0.0025 – 1 mM (0.3 – 111 ppm) histamine in 96-well plate assay.
  • Convenient. The procedure involves adding a single working reagent, and reading the absorbance after 30 minutes. Room temperature assay. No 37°C heater is needed.
  • High-throughput. “Add-mix-read” type assay. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day.


  • OD565nm


  • Food, beverage and agricultural products


  • All


  • 30 min


  • 100 tests

Detection Limit

  • 2.5 µM

Shelf Life

  • 6 months

More Details

  • HISTAMINE (C5H9N3) is a biogenic amine naturally present in many foods and body cells in amounts without toxicological significance. It is also a contaminant that mostly found in the Scombridae family fishes such as tuna and mackerel or other seafood products when improperly handled or stored. The consumption of foods containing high level of histamine may lead to an allergy-like food poisoning known as scombroid poisoning.

    BioAssay Systems histamine assay kit is based on histamine dehydrogenase catalyzed oxidation of histamine in which the formed electron mediator reduces a formazan (MTT) reagent. The intensity of product color, measured at 565 nm is directly proportional to histamine concentration in the sample.

Does the assay kit work in particular species?

Our assays work in all species. None of our kits are species specific.

Do you offer free sample kits or discounts for testing?

Unfortunately, at this time we do not offer free sample kits. Customers must purchase assay kits for their own testing, on occasion we will offer discounts.

Does the histamine kit suitable for biological samples such as blood, urine, etc.?

Since most of the biological samples contain histamine under the kit detection limit, this kit is only suitable for food, beverage, and agricultural products.

How do I prepare the solid & liquid samples?

Fish or other solid samples: Weigh ˜1 g sample and grind to paste. Weigh ˜200mg paste sample and homogenize in 800 μL 0.05% acetic acid. May vortex or use handheld homogenzier to homogenize sample. If using blender to homogenize sample, just simply scale up the sample size and solvent in 1mg: 4 μL ratio (ex: 5 g samples in 20 mL acid). Centrifuge homogenate at 14,000 g for 10 min. Transfer the clear supernatant into a clean tube. It is prudent to run a pilot test of the sample at different dilutions. Choose a dilution with the readings in the detection range of the standard curve for further assays. Most samples can be stored at -80°C if not assayed immediately.

Cheese: Weigh ˜200 mg sample and homogenzie in 800 μL 0.05% acetic acid. Heat in heat bath at 60°C for 10mins. Centrifuge homogenate at 14,000 g for 10 min. Transfer the clear supernatant into a clean tube.

Liquid samples: Fish sauce or soy sauce: 1:5 dilution in H2O. Red wine or other alcoholic beverage: No dilution necessary.

Can I store unused reagents for future use?

Yes, unused reagents can be stored according to the assay protocol. Repeated freeze/thaw cycles of reagents should be avoided.

Do I need to use a standard or standard curve with each assay run?

Yes, it is highly recommended to run for each assay a standard curve, or where applicable, internal standard.

Dwidar, M., & Yokobayashi, Y. (2019). Development of a histamine aptasensor for food safety monitoring. Scientific Reports, 9(1), 16659. Assay: Histamine in tuna meat.

To find more recent publications, please click here.

If you or your labs do not have the equipment or scientists necessary to run this assay, BioAssay Systems can perform the service for you.

– Fast turnaround
– Quality data
– Low cost

Please email or call 1-510-782-9988 x 2 to request assay service.


For orders of 10 or more kits, please call +1-510-782-9988×1 or email us for best pricing and/or bulk order.

Orders are shipped the same day if placed by 2pm PST
Shipping: On Ice
Carrier: Fedex
Delivery: 1-2 days (US), 3-6 days (Intl)
Storage: -20°C upon receipt

Why BioAssay Systems?

Technical support provided by the very scientists that develop the assays.

Products are extensively tested and validated prior to release so researchers need little-to-no time for assay optimization.

Because we develop and manufacture the products, our prices are lower than competitors on the market

With over 200 different products, acquire all your assay kit needs in one order.

Products used by clients worldwide with distributors in over 60 countries.