For the X-ray, the patient drinks a liquid containing barium after fasting which will show up in the X-ray and the physician is able to see if there is still food in the stomach as well. This can be an easy way to identify whether the patient has delayed emptying of the stomach. The clinical definition for gastroparesis is based solely on the emptying time of the stomach (and not on other symptoms), and severity of symptoms does not necessarily correlate with the severity of gastroparesis. Therefore, some patients may have marked gastroparesis with few, if any, serious complications.In other cases or if the X-ray is inconclusive, the physician may have the patient eat a meal of toast, water, and eggs containing a radioactive isotope so they can watch as it is digested and see how slowly the digestive tract is moving. This can be helpful for diagnosing patients who are able to digest liquids but not solid foods. Complications
Complications of gastroparesis include:

Fluctuations in blood glucose due to unpredictable digestion times due to changes in rate and amount of food passing into the small bowel. This makes diabetes worse, but does not cause diabetes. Lack of control of blood sugar levels will make the gastroparesis worsen. General malnutrition due to the symptoms of the disease (which frequently include vomiting and reduced appetite) as well as the dietary changes necessary to manage it. This is especially true for vitamin deficiencies such as scurvy because of inability to tolerate fresh fruits.
Elapegademase, sold under the brand name Revcovi, is a medication for the treatment of the rare disease adenosine deaminase deficiency-SCID in children and adults.It is a recombinant enzyme that is administered weekly by intramuscular injection.Elapegademase may interact with PEGylated drugs.Elapegademase-lvlr was approved by the U.S. Food and Drug Administration (FDA) in 2018. Leadiant Biosciences was awarded a priority review voucher for its development under the pediatric rare diseases program. References
External links
"Elapegademase". Drug Information Portal. U.S. National Library of Medicine.