Why HAB Monitoring Teams Need Field-Ready Toxin Detection

Since March 2025, the coastlines of South Australia have been battling one of the most significant harmful algal bloom (HAB) events ever recorded — not just in Australia, but globally. The bloom, caused primarily by the dinoflagellate Karenia mikimotoi and later joined by Karenia cristata, has devastated marine life across an estimated 1,500 km of coastline, triggering fish kills, aquaculture losses, beach closures, and public health advisories that have persisted into 2026.

As of May 2026, government agencies in South Australia continue to monitor the situation, with localized regions still recording elevated chlorophyll-a concentrations — a key indicator of ongoing algal activity. The scale and duration of this event has been described by marine biologists as unprecedented, and it serves as a stark reminder of what HAB events can mean for ecosystems, public safety, water quality programs, and the agencies tasked with responding to them.

Why Rapid Detection Matters During a HAB Event

When a harmful algal bloom strikes, the pressure on environmental monitoring teams is immense. Agencies need to know: Which toxins are present? At what concentrations? Which water bodies are affected right now — and which are safe? The answers determine beach closures, shellfish harvest decisions, public health advisories, and aquaculture response protocols.

Traditional laboratory-based methods such as ELISA and LC-MS/SS provide high sensitivity and quantitative data, but they require sample transport, laboratory processing, and turnaround times that can range from hours to days. During a dynamic, fast-moving bloom event — where toxin fronts shift with ocean currents and weather — that delay has real consequences.

This is where field-deployable rapid lateral flow assays become a critical part of the monitoring toolkit.

Attogene’s Rapid Algal Toxin Detection Kits

Attogene offers a range of rapid lateral flow detection kits specifically designed for the kinds of toxins associated with harmful algal bloom events — including cyanotoxins, shellfish toxins, and marine biotoxins that pose risks to human health and aquatic ecosystems.

For monitoring agencies, environmental consultants, aquaculture operators, and government response teams dealing with a HAB event like the one ongoing in South Australia, the following Attogene products are directly relevant:

Microcystin Detection

Microcystins are among the most well-characterized cyanotoxins, commonly produced during cyanobacterial blooms in freshwater environments and increasingly detected in coastal waters during HAB events. Attogene offers multiple microcystin detection formats for different sampling contexts:

AU2024 — Microcystin Test (Rapid – Recreational Water, field deployable): Designed for on-site water testing in recreational and environmental monitoring contexts.
AU2024-01 — Microcystin Test Kit (Rapid-Lab): For higher-throughput screening in a laboratory setting.
AU2024-02 — Microcystin Test Kit (Rapid-Drinking Water): Optimized for drinking water monitoring workflows and regulatory screening programs.
EL2024-05 — Congener-Independent Microcystin/Nodularins ELISA Kit: For quantitative laboratory confirmation, compatible with US EPA Method 546.

Saxitoxin (Paralytic Shellfish Poisoning)

Saxitoxin and its analogues are responsible for paralytic shellfish poisoning (PSP), a serious public health concern in shellfish-producing regions affected by dinoflagellate blooms. Attogene offers field-deployable and laboratory saxitoxin detection kits:

AU2057 — Saxitoxin PSP Lateral Flow Kit (Freshwater Streams and Source Water)
AU2057-01 — Saxitoxin PSP Lateral Flow Kit (Shellfish Rapid Test – field deployable): Directly applicable to aquaculture monitoring and shellfish harvest safety decisions.
EL2048-02 — Saxitoxin (PSP) ELISA Kit: For quantitative laboratory confirmation.

Cylindrospermopsin Detection

Cylindrospermopsin is a hepatotoxic cyanotoxin increasingly detected in both freshwater and marine HAB events. Attogene provides:

AU2058 — Cylindrospermopsin Detection Kit (Rapid Recreational Water)
AU2058-01 — Cylindrospermopsin Detection Kit (Rapid Field Use – field deployable)
EL2047-02 — Cylindrospermopsin ELISA Kit: For quantitative laboratory analysis.

Anatoxin-a Detection

Anatoxin-a is a potent neurotoxin produced by cyanobacteria during bloom events, posing risks to wildlife, domestic animals, and humans. Attogene offers:

A Layered Monitoring Approach

The most effective HAB response programs use a layered monitoring approach: rapid lateral flow assays for immediate field screening and triage, followed by ELISA or LC-MS confirmation for samples that require quantitative data or regulatory reporting. Attogene’s product portfolio supports both layers of this workflow — field-deployable kits for on-site screening and laboratory ELISA kits for confirmation and quantitation.

For agencies managing a large-scale bloom event across an extended coastline, the ability to screen dozens of water or shellfish samples per day in the field — before deciding which require full laboratory analysis — can dramatically improve response efficiency, resource allocation, and decision-making speed.

qPCR Monitoring for Bloom Source Identification

Beyond toxin detection, understanding which cyanobacterial or algal species are present in a water body — and in what quantities — is essential for predicting bloom behavior and toxin risk. Attogene’s nucleic acid product portfolio includes qPCR detection kits targeting the genetic markers of key toxin-producing organisms:

These molecular tools allow monitoring teams to detect the presence of toxin biosynthesis genes directly from water or biomass samples — providing early warning data before toxin concentrations reach detectable levels by immunoassay.

Be Ready Before the Next Bloom

The South Australian bloom event is a case study in what happens when environmental conditions align to produce a HAB of unusual scale and duration. Climate-driven marine heatwaves, nutrient loading from flood events, and coastal upwelling created the conditions for a bloom that has persisted for over a year — and monitoring programs that lacked rapid on-site detection capability faced significant gaps in their response.

HAB seasons are becoming longer, more frequent, and more geographically widespread. Whether your program monitors recreational water, drinking water sources, shellfish harvest areas, or environmental compliance zones, having rapid lateral flow kits and confirmatory ELISA or qPCR tools on hand before a bloom event begins is now a baseline expectation for effective environmental monitoring.

To explore Attogene’s full range of algal toxin detection products, visit the full Attogene product list or browse by category:

Lateral Flow Products — rapid field-deployable detection kits
ELISA Products — quantitative laboratory confirmation kits
Nucleic Acid Products — qPCR and qLAMP detection for bloom organism identification

Questions about which products fit your monitoring workflow or sample type? Contact Attogene to discuss your application, sensitivity requirements, and testing environment.

Attogene develops rapid detection and analytical assay products for environmental monitoring, food safety, molecular biology, and research applications. Our portfolio includes lateral flow assays, ELISA kits, qPCR detection systems, enzymatic assays, and nucleic acid tools for laboratory and field deployment.