Subcutaneous Fat Aspirate
Method Description Describes how the test is performed and provides a method-specific reference
The technique involves sterilizing and anesthetizing a small area of the anterior abdominal wall. Subcutaneous fat is then aspirated into a syringe attached to a large bore needle. The small bits of fat obtained are crushed under a glass slide and stained with Congo red. Positive staining with the Congo red stain is indicated by apple-green birefringence utilizing a polarized microscope.(Libbey CA, Skinner M, Cohen AS: Use of abdominal fat tissue aspirate in the diagnosis of systemic amyloidosis. Arch Intern Med 1983;143:1549-1552; Westermark P, Stenkvist B: A new method for the diagnosis of systemic amyloidosis. Arch Intern Med 1973;132:522-523)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Friday; Varies