Bee Health Test Kits

Bee health test kits are measuring kits that turn a colony's health status into a number or a clear result: varroa counting kits, rapid foulbrood tests, a microscope kit for Nosema, the hygienic behaviour test and residue tests for honey and wax. Each kit answers a different question; none of them on its own is a definitive diagnosis or a treatment. Used correctly, they let you make early, measurement-based decisions without waiting for symptoms.

Which test answers which question?

Before buying a test kit, be clear about what you want to find out. The table below summarises the questions beekeepers ask most often and the tools that answer them:

Varroa test kits

Varroa test kits usually consist of two nested transparent compartments, a sieve and a 300-bee fill line. With an alcohol or detergent-water wash the bees die but the result is the most reliable; in a test done with icing sugar the bees are returned to the hive. The result is expressed as mites per 100 bees by dividing the number of mites found by three. Details are on the Varroa Counting Tools page.

Rapid foulbrood tests

The lateral flow test cassettes used for American and European foulbrood give a result within minutes when the suspect larva is crushed in a buffer liquid and dropped onto the cassette. The control line shows that the test is valid; the test line shows the presence of the agent. Both diseases are notifiable in Türkiye: if the result is positive, isolate the hive and report to the official veterinary service / local agriculture authority; a negative result does not rule out the disease if symptoms persist. The steps for use are described on the Bee Disease Diagnostic Kits page.

Nosema test kit: the microscope

A reliable rapid cassette for Nosema is not widely available; the test is done with a light microscope with 400× magnification. A simple kit consists of a microscope, slides and cover slips, a small mortar or crushing tube, a dropper and clean water. A sample of about 30 bees is taken from old foragers returning to the entrance, their abdomens are crushed with water and bright-edged oval spores are looked for. A counting chamber can be used to measure spore density. Beekeepers without a microscope can send the sample to a laboratory.

The hygienic behaviour test

Hygienic behaviour is the tendency of worker bees to detect diseased or dead brood, uncap the cell and clean it out. It contributes to the colony's resistance to AFB, chalkbrood and varroa and is used as a selection criterion in breeding. There are two common tests:

• Freeze-killed brood test: A small area of capped brood is killed by freezing (liquid nitrogen or a piece of comb frozen in a freezer is used) and returned to the hive. Usually, 24 hours later, the number of cells cleaned out is checked.
• Pin test: A set number of capped brood cells are pierced with a fine pin to kill the pupae; a day later the cleaned-out cells are counted.

The test kit contains a measuring ring or template, a fine pin, a marker pen and a record form. Results are compared between colonies; not one test but several repeats give a reliable picture. Hygienic colonies are more resistant to diseases but not immune; the rules for notifiable diseases do not change.

Residue tests for honey and wax

Honey packers and some beekeepers use rapid residue test strips to screen honey for antibiotic or drug residues. These strips look for specific groups of substances and are intended for preliminary screening; a definitive result and quantification are done by accredited laboratory analysis. Laboratory analysis is also needed if acaricide residues in wax or pesticide poisoning are suspected.

A hive-side health check kit

Putting together a small bag so that you can carry out many tests at the hive makes the work easier:

• Varroa wash jar or icing sugar jar, measuring cup, white dish
• Matchsticks or disposable thin sticks, tweezers
• A strong torch and a magnifier (or a phone camera)
• Disposable gloves, paper bags, small jars, labels and a permanent marker
• A rapid foulbrood test kit when needed
• Notebook: date, hive number, test and result

Choosing and storing test kits

• Purpose: Read which agent or substance the kit tests for and which sample it works with.
• Reliability: Look at the sensitivity and specificity stated by the manufacturer and whether there is independent validation.
• Instructions: Prefer kits with clear, step-by-step instructions.
• Storage: Keep rapid test kits within their expiry date and storage temperature; do not leave them in a vehicle in the sun.
• Confirmation: Find out in advance how a positive result is confirmed and to whom it is reported.