Alaria spp.

(aka., Intestinal Carnivore Fluke)
Method of Detection: 
  • ​Fecal sediment >>> Fecal float​
​
Size:
  • Egg: 98–134 × 62–68 μm

Aelurostrongylus abstrusus

(aka., Cat Lungworm)
Method of Detection:
  • Baermann (fresh feces) >>> Fecal float (centrifugal in ZnSO4)
​
Size:
  • First-stage larva: 360–400 × 15–20 μm (tail with S-shaped curve and dorsal spine)

Ancylostoma spp.

(aka., Hookworm)
Method of Detection:
  • Fecal float (simple or centrifugal)​ ​

Size:
  • Egg: 52–79 × 28–58 μm

Capillaria spp.

(aka., Hairworm, Threadworm, Pearsonema spp., Aonchotheca spp., and Eucoleus spp.)
Method of Detection:
  • Fecal float (simple or centrifugal), or
  • Cytologic exam of tracheal or nasal mucous
​
Size:
  • Egg: 54–80 × 23–40 μm

Cryptosporidium spp.

(aka., Coccidia)
Method of Detection:
  • Acid-fast stain of fecal smear, or
  • ​Fecal float (with Sheather's sugar)
​
Size:
  • Oocyst: 4.6–5.4 × 3.8–4.7 μm

Cystoisospora felis

(aka., Coccidia, Isospora felis)
Method of Detection:
  • Fecal float (simple or centrifugal)
​
Size:
  • Oocyst: 32–53 × 26–43

Cystoisospora rivolta

(aka., Coccidia, Isospora rivolta)
Method of Detection:
  • Fecal float (simple or centrifugal)
​
Size:
  • Oocyst: 21–29 × 18–26

Diphyllobothrium latum

(aka., Broad Tapeworm, Dibothriocephalus latus)
Method of Detection:
  • Fecal sediment
​
Size:
  • Egg: 58–76 × 40–51 μm

Dipylidium caninum

(aka., Flea Tapeworm, Cucumber Seed Tapeworm, Double-pored Dog Tapeworm)
Method of Detection:
  • Identify egg packets recovered from tapeworm segments >>> Detection of eggs/ egg packets on fecal float
​
Size:
  • Egg packet: 120–200 μm
  • ​Egg: 25–60 μm

Echinococcus multilocularis
Method of Detection:
  • Identify eggs recovered from tapeworm segments >>> Detection of eggs on fecal float
  • Acetate tape cytology of perianal skin
​
Size:
  • Egg: 25–40 μm

Eimeria spp.

(aka., Non-infective coccidia that pass through the gastrointestinal tract after coprophagy or predation)
Method of Detection:
  • Fecal float (simple or centrifugal)
​
Size:
  • Oocyst: 11–88 × 9–59 μm

Entamoeba histolytica

(aka., Entamoeba dysenteriae, Endamoeba histolytica)
Method of Detection:
  • Saline fecal smear of fresh feces (± Lugol's iodine, Wright's stain, or Giemsa stain)
​
Size:
  • Cyst: 10–12 μm
  • Trophozoite: 12–30 μm

Eurytrema spp.

(aka., Pancreas Fluke, Distoma pancreaticum, Eurytrema ovis)
Method of Detection:
  • Fecal sediment
​
Size:
  • Egg: 40–53 × 23–36 μm

Giardia sp.

(aka., Giardia duodenalis, Giardia intestinalis, Lamblia lamblia)
Method of Detection:
  • Fecal float for cysts (centrifugal in ZnSO4) (± Lugol's iodine)
  • Saline fecal smear of fresh feces for trophozoite (± Lugol's iodine)
​
Size:
  • Cyst: 8–13 × 7–10 μm
  • Trophozoite: 12–17 × 5–10 μm

Hammondia heydorni, Neospora caninum, or Toxoplasma gondii
Method of Detection:
  • Fecal float (simple or centrifugal)
​
Size:
  • Oocyst: 10–14 × 9–13 μm

Mesocestoides spp.
Method of Detection:
  • Identify eggs recovered from tapeworm segments >>> Detection of eggs on fecal float
​
Size:
  • Egg: 25–60 μm × 25–43 μm

Nanophyetus salmincola

(aka., Salmon Poisoning Fluke, Troglotrema salmincola)
Method of Detection:
  • Fecal sediment
​
Size:
  • Egg: 64–97 × 34–55 μm

Paragonimus kellicotti

(aka., Lung Fluke)
Method of Detection:
  • Fecal sediment >>> Fecal float
  • Cytologic examination of bronchial mucous 
​
Size:
  • Egg: 75–118 × 42–67 μm

Pentatrichomonas hominis

(aka., Pentatrichomonas felis, Trichomonas felis, Trichomonas intestinalis)
Method of Detection:
  • Saline fecal smear of fresh feces
​
Size:
  • Trophozoite: 8–20 μm long

Physaloptera spp.