Table 1 Distribution of painful procedures and conditions in 36 references used to evaluate the Substance P concentrations as a biomarker for pain in the blood plasma and serum of calves and adult cattle. For the present systematic review, calves were defined as cattle ≤ the age of 12 months

From: Substance P concentrations in the blood plasma and serum of adult cattle and calves during different painful procedures and conditions – a systematic review