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. Author manuscript; available in PMC: 2013 Aug 8.
Published in final edited form as: Sci Transl Med. 2012 Aug 8;4(146):146ra110. doi: 10.1126/scitranslmed.3003948

Table 4.

Summary of somatic withdrawal rating scale.

Withdrawal sign Points assigned
Body weight loss in 60 min (per each 1%) 1
Wet dog shakes
 1–2 2
 3+ 4
Jump attempts
 2–4 1
 5–9 2
 10+ 3
Abdominal spasms (per observation) 1
Penile erection/ejaculation/grooming 3
Teeth chattering 2
Irritability/vocalization 3
Swallowing movements 2
Ptosis (drooping eyes) 2
Abnormal posture 3
Defecation/diarrhea 2
Profuse salivation 7