Final answer:
An unexpected finding for osteomyelitis is a decreased erythrocyte sedimentation rate (ESR). It is important to note that ESR is not the only indicator of osteomyelitis, and a combination of other symptoms and tests should be considered for an accurate diagnosis.
Step-by-step explanation:
Osteomyelitis is a bone infection that can be identified through laboratory values. An unexpected finding for osteomyelitis is a decreased erythrocyte sedimentation rate (ESR). ESR is a measure of inflammation in the body, and a lower ESR may indicate that the infection is not being properly detected. However, it is important to note that ESR is not the only indicator of osteomyelitis, and a combination of other symptoms and tests should be considered for an accurate diagnosis.