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Lab Manual for Moffitt-Long and Mount Zion

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Porphyrins Evaluation, RBC

Item Value
Available Stat? No
Test code EPQTS
Test group Porphyrins
Performed by Mayo
Sendout? Yes
Method Spectrofluorometric, HPLC
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.
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.
Container type Dark Green top on ice
Amount to Collect 5 mL blood
Sample type Heparinized whole blood
Preferred volume 5 mL blood
Min. Volume 3 mL blood
UCSF Rejection Criteria Hemolyzed or collected outside of stated time frames.
Processing notes Whole Blood to be washed at Mayo Medical Laboratories. Specimen must arrive within 48 hours of draw.

Place green top on wet ice and forward whole blood to China Basin for MCI courier pickup at 1600 hours. DO NOT freeze sample.

Notify sendout at 3-1349 that specimen is en-route. Mark sample REFRIGERATED to Mayo Labs.

Order MAYO #88886. Call MCS for pickup.
Ref Lab Rejection Criteria Sample not received by Mayo within 48 hours of collection. Frozen sample.
Units µg/dL
Normal range < 80 µg/dL
Synonyms Porphyrin fractionation; RBC porphyrins
Turn around times Test run Monday-Friday. Turnaround time: 3-6 days.
Reflex? For samples with porphyrin ≥ 80p µg/dL fractionation is automatically performed at an additional charge.
LOINC code 2814-2
Last Updated 9/8/2012 2:22:45 PM
Entry Number 1281
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