How accurate are blood tests for appendicitis?

Not diagnositic. Blood test do not diagnose appendicitis, elevated blood cell counts in a person with right lower quadrant pain support the diagnosis. Imaging studies are more reliable than blood tests.
ReliableMostOfTime. While most cases there is elevation of white blood cells&high neutrophil count&that along with a typical history&exam one can pretty well clinically diagnose Acute Appendicitis&that's what we did in past before sophisticated imaging was available&I practiced in that period in sixties&seventies.But now we like to confirm the diagnosis by imaging.Cat Scan is more reliable but often we do ultrasound.

Related Questions

Can normal ultrasound of Appendix along with repeated normal blood tests over days rule out appendicitis?

Appendicitis. Appendicitis classically starts as pain around belly button, migrating to the right lower abdomen. Nausea starts before the pain if present, not hungry, and the pain is worse with movement. Symptoms progress over 24-36 hours. Not everyone has classic presentation. Symptoms longer than 48 hours suggest no appendicitis. Best test is ct scan. Hope this helps! Read more...
Not absolutely. It makes acute appendicitis much, much less likely, but modern antibiotics may sometimes mask findings of acute appendicitis, as can immune deficiency. If the blood samples are very close together, very early appendicitis may not be excluded. Also, recurrent appendicitis or chronic appendicitis may have little or no findings when quiescent. Doctors also use observation and physical findings. Read more...

Appendicitis pain 5 days, ER gave me ultrasound and blood tests. Said no sign of appendicitis. Pain continues. Positive McBurney. Appendicitis likely?

Common appy imitator. In general, the new CT scanners are very good at picking up appendicitis. There is another fairly common condition called mesenteric adenitis which present almost exactly like appendicitis but it's usually due to a virus and resolve on its own. Again, in general, if your lab work is normal and the CAT scan is normal appendicitis extremely unlikely. Read more...

Is it likely that blood tests and a CT scan could miss appendicitis?! please help

Time, physical exam. A ct scan and blood work is very good. Over time with a physical exam your doctors will evaluate you. The ct scan is one moment in time. If you feel worse go back to emergency. Read more...

7 days ago nausea pelvic pain which spread upwards to navel both sides suddenly began. Normal Blood tests normal US. Worried about appendicitis?

Doubt appendicitis . This is not a common story for appendicitis, and I would say is very unlikely to be appendicitis. If severe, consider ct scan to be sure. Gynecology consultation may also be helpful. Hope this helps! Read more...