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 Can detect free fluid in small amounts superior to physical examination and abdominal radiography and comparable to the gold standard of computed tomography (CT).

 Can detect clinically significant pleural and pericardial effusions in most cases by imaging past or cranial to the diaphragm at the AFAST DH view.

 Can detect retroperitoneal effusion when imaging at the AFAST spleno‐renal (SR) and hepato‐renal (HR) views and the HR5th and SR5th bonus views.

 Can anticipate degree of anemia in different patient subsets by using its easily applied abdominal fluid scoring system.

 Can be used to screen for canine anaphylaxis through the detection of sonographic striation of the gallbladder wall as the “double rim effect” or “halo effect” or “halo sign” at the AFAST DH view, referred to as the “anaphylactic gallbladder,” coupled with the finding of a flat caudal vena cava (CVC) (see Figure 36.9).

 Can be used to screen for right‐sided congestive heart failure through the detection of sonographic striation of the gallbladder wall as the “double rim effect” or “halo effect” or “halo sign” at the AFAST DH view, referred to as the “cardiac gallbladder,” coupled with the finding of a FAT CVC (see Figure 36.7).

 Can be used to assess volume status and right‐sided cardiac function by evaluating CVC size and for the presence of hepatic venous distension, the “tree trunk sign,” at the AFAST DH view (see Figure 36.8).

 Can screen for concurrent target organ injury or pathology for basic soft tissue conditions of the liver, gallbladder, kidneys, urinary bladder, spleen, and gastrointestinal tract.

 Can assess urinary bladder integrity at the AFAST cysto‐colic (CC) view especially when there are concerns regarding rupture in trauma cases.

 Can noninvasively estimate urinary bladder volume and thus urine output at the AFAST CC view using the formula of length (L) × width (W) × height (H) (cm) × 0.625 = estimation of urinary bladder volume (mL) (Lisciandro and Fosgate 2017).