Item Value
Test name Porphyrins Evaluation, RBC
Available Stat? No
Turn around times Test run Monday-Friday. Turnaround time: 3-6 days.
Performed by Mayo
Patient Preparation Have patient fast for 12-14 hours. Water may be taken as needed. No other liquids are allowed. Patient should abstain from alcohol for 24 hours prior to sample collection. The patient should be off medications for at least 1 week prior to sample collection. If clinically inappropriate to discontinue medications,
forward a list of medications with the specimen.
Normal range < 80 µg/dL
Container type Dark Green top on ice
Amount to Collect 5 mL blood
Collection Instructions Draw a full, Dk. green top (heparin) tube, and send entire heparinized whole blood specimen on wet ice to lab immediately.

Draw specimen Monday-Thursday by noon only.
Sample type Heparinized whole blood

If you have additional questions regarding this test, please call: 415-353-1667