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Wildlife Endocrinology

Science Meets Animal Welfare


Delivering Non-invasive Solutions for Wildlife Care

For over four decades, scientists have trusted Enzo’s steroid hormone ELISA kits to deliver sensitivity and reproducibility


With thousands of species each year listed as endangered or threatened, the work done by biologists around the world to understand and preserve animal health is never ending.

Reproduction studies and stress are two of the most common concerns today, as each species has its unique set of challenges that affect the biology and stresses related to rescue efforts, rehabilitation, and mating.

Hormone analysis continues to be widely accepted for monitoring stress response and evaluating reproductive health on wildlife. Non-invasive sampling methods have gained popularity in the last few decades for monitoring stress, reproductive physiology, animal behavior, and overall animal health. Enzyme immunoassays continue to be the non-invasive method of choice for endocrine monitoring.

Enzo Life Sciences provides a broad range of immunoassay kits for monitoring stress, reproductive physiology, health and welfare, and survival of wildlife animals.

  • Non-invasive – no need for challenging sample collection procedures
  • High-sensitivity – confidently detect low concentrations of target
  • High reproducibility – be confident that you will have reproducibility between samples and lots
  • Species independent – use the same kits for all studies, no need for separate species-specific kits



Enzo Partners with
the ISWE and AZA
to deliver best in class products





We offer discounts for all ISWE and AZA members.
Please contact us for details!

Involved for Decades in Animal Welfare

For decades, scientists have trusted Enzo’s steroid hormone ELISA kits to deliver sensitivity and reproducibility. Enzo provides a broad range of immunoassay kits for monitoring stress, reproductive physiology, health and welfare, and survival of wildlife. Our most popular ELISAs for the quantification of 17β-estradiol, progesterone, testosterone, cortisol, and corticosterone have been cited in numerous publications and protocols shared by zoos, aquariums, and conservation scientists worldwide, allowing us to create and share an extensive database of knowledge for methods that benefit creatures both large and small.



Easy to use and consistent ELISA kit

"Our laboratory has been using these assay kits for well over 10 years and are very pleased with the consistency of results

- Seattle Aquarium

Why Choose Our Kits?


Non-Invasive - Can be used with a variety of samples: Saliva, Urine, Feces
Species Independent - Can be used on all animals
Lot-to-lot consistency - Extremely reproducible results

Find the Right Assay for You


What is your application?

Animal Stress Monitoring

Just like humans, animals can be affected by stress. Animals tend to hide their stress. Stress can be caused by environmental changes, aging, disease, or other life events. Understanding factors that affect stress in animals is vital for improving overall animal care and conservation.

Stress-related hormones in animals can be measured using feces, urine, hair, plasma, serum or saliva. The goal is to establish baseline stress levels to determine how changes in an animal’s environment, social group or other factors may impact zoochosis.

Analyte Validated Samples Species
Aldosterone ELISA Kit Plasma, serum, and urine Any
Angiotensin II ELISA Kit Plasma and serum Any
Corticosterone ELISA Kit Culture supernatants, plasma, serum, saliva, and feces Any
Cortisol ELISA Kit Culture supernatants, plasma, serum, saliva, and urine Any
Direct 8-iso-PGFα ELISA Kit Plasma, serum, and tissue lysate Any

Download the list of Cited Samples


Listing all currently validated species for our wildlife endocrinology product range

Featured Product

Corticosterone ELISA Kit

  • Sensitive measurement of corticosterone, detecing as little as 27 pg/ml

  • Higher throughput with results from up to 39 samples in duplicate in just 3 hours

  • Flexibility built-in, measure corticosterone in any species

  • Trusted and routinely used to monitor stress levels in zoo animals




Typical standard curve of Corticosterone ELISA Kit

See how researchers are using our kit to detect corticosterone levels in bird serum

Reproductive Health

Every species has its own unique reproductive cycle which is dependent on biology and environment. To ensure the long-term health of a species population, one can measure hormone levels and gain insight into animal reproductive cycles to ensure they are fertile and ready for breeding.

Analyte Validated Samples Species
DHEA ELISA Kit Culture supernatants, plasma, serum, saliva, and urine Any
Direct 8-iso-PGFα ELISA Kit Plasma, serum, and tissue lysate Any
17β-Estradiol ELISA kit Culture supernatants and saliva Any
Cortisol ELISA Kit Culture supernatants, plasma, serum, saliva, and urine Any
17β-Estradiol high sensitivity ELISA kit Plasma and serum Any
Direct 8-iso-PGFα ELISA Kit Plasma, serum, and tissue lysate Any
Oxytocin ELISA Kit Culture supernatants, serum, saliva, urine, cerebral spinal fluid Any
Progesterone ELISA Kit Culture supernatants, serum, and saliva Any
Arg-Vasopressin ELISA Kit Culture supernatants, plasma, and serum Any
Testosterone ELISA Kit Culture supernatants, plasma, serum, and saliva Any
Testosterone High Sensitivity ELISA Kit Plasma, serum and urine Any

Download the list of Cited Samples


Listing all currently validated species for our wildlife endocrinology product range

Featured Product

Testosterone ELISA Kit

  • Highly sensitive measurement of testosterone, detecting as little as 5.67 pg/ml

  • Steroid displacement reagent provided to assay free or total testosterone

  • High throughput format with results in <3 hours for up to 39 samples in duplicate

  • Excellent consistency lot-after-lot ideal for longitudinal studies




Typical standard curve of Testosterone ELISA Kit

See how a researcher using the Enzo Life Sciences Testosterone ELISA measured Testosterone levels in lizard

Download our Wildlife Endocrinology Brochure

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