A 38-year-old man who was arrested on suspicion of murder has now been released with no further action.
Emergency services were called to an address in Crossley Street at around 12.40pm on Thursday after the woman's body was found.
But police have now confirmed her death is not being treated as suspicious after no evidence of injuries consistent with assault or trauma were found. Further tests will be carried out to establish a cause of death.
A spokesman from West Midlands Police said: "Following enquiries, the death of a woman in Netherton on Thursday is not being treated as suspicious.
"A post-mortem examination on the 44-year-old’s body proved inconclusive, but there was no evidence of injuries consistent with an assault or trauma.
"Further pathology tests will be conducted in order to try to establish the cause of death.
"A 38-year-old man, who was arrested on suspicion of murder, has been released with no further action."
A West Midlands Ambulance Service spokesman said: "We were called to reports of a medical emergency at a property on Crossley Street at 12.22pm on Thursday. Two ambulances and a paramedic officer attended the scene.
"On arrival we discovered one patient, a woman. Sadly, it quickly became apparent nothing could be done to save her and she was confirmed dead at the scene."