SED rate- indicates Erythrocyte Sedimentation Rate- if its high, it indicates some inflammation going on in the body. It can be high in infections, anemia
Alone done, ESR
is not much informative. It`s done along with other battery of investigations.
How ever ESR of 13 is well within normal limits.
For his reflux: After some viruses gastritis
and reflux are commonly seen.
If he takes medications for his reflux adequately- he will be okay.
Along with medications, when he lies down, try to raise the head end of his bed. Just a pillow is not sufficient. This will help for his reflux.
You may ask your doctor the details of the tests being done and what do they want to rule out.
Please feel free to get back with details.