If spo2 is normal, no tests are needed.
Blood tests within the first 15 days of symptoms onset Indicate severity of infection.
Ct scan tells about severity of pneumonia.
In people who maintain oxygen saturation levels, BUT are high risk : diabetic, asthmatic, smoker, elderly
are asked to specifically do blood tests as their conditions can worsen very quickly.
Next Steps
since you do not have any risk factors and maintain normal saturation, no need of further tests. ✌