The doctor was also able to establish that the woman had died and that she had been there for a while, how long is unclear.
What findings on the body that made him sound the alarm to the police is unclear.
On Tuesday, there will be a forensic medical examination in Lund.
- It is the one we are waiting for now, it is directly decisive for what happens next, says chamber prosecutor Kristina Wedelsbäck.
Before 12 o'clock on Tuesday, she must decide whether the arrested 35-year-old man should be arrested.
- If the result of the forensic examination is not ready, it is likely that I will make an investigation arrest, says Kristina Wedelsbäck.
Denies crime
The 35-year-old called himself and called an ambulance.
He was then in the home where he was also later arrested.
Police have also made findings in the couple's apartment which led to the man being arrested on probable cause on suspicion of murder, the stronger degree of suspicion.
- Furniture and objects were lying so you can imagine that there has been a riot before the death, says Kristina Wedelsbäck.
The suspect denies the crime and has given the police their explanation for what happened.
Convicted earlier
The 35-year-old man and the deceased woman, who was 52 years old, were cohabiting to and from, according to the prosecutor.
- Now the police continue to interrogate people in the couple's vicinity who can tell something about how their relationship has been, says Kristina Wedelsbäck.
The detainee has previously been convicted of sexual harassment, violence against women and violation of a restraining order.