1) Before deworming: 20 random individual samples of approximately 5 grams/sample (teaspoon size) placed into one container.
2) Repeat on day 10-14 after deworming
Sample must arrive within 48 hrs. of sampling.
For herds of less than 20 head, sample all animals
This test is best done in cows when coming off grass, or for calves at weaning.