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Porphyrins, fractionated, random urine

Item Value
Clinical Questions Does my patient have acute porphyria?
Approval req'd? No
Available Stat? No
Test code PORFUR
Performed by Quest
Sendout? Yes
Method HPLC
Collection Instructions Collect urine in plastic cup, wrap with aluminum foil to protect from light.

Transport sample asap to laboratory, if transport is delayed refrigerate the sample.
Container type Urine cup
Amount to Collect 20 mL urine
Sample type Random urine
Preferred volume 2 mL urine
Min. Volume 1 mL urine
UCSF Rejection Criteria Received at room temperature, not protected from light.
Processing notes Protect specimen from light, aliquot urine into dark brown specimen vial or wrap in foil . Freeze aliquot and submit to China Basin sendout , order Quest test #36592X.
Ref Lab Rejection Criteria Received at room temperature, not protected from light, pH < 4.0 when rec'd at Quest.
Units µg/g creatinine (mcg/g creatinine)
Normal range Uroporphyrin:
1-10 years 4.3-16.2 mcg/g creatinine
11-17 years 4.6-18.9 mcg/g creatinine
≥ 18 years 22.0 or less mcg/g creatinine

≥ 1 year 4.6 or less mcg/g creatinine

≥ 1 year: NOT DETECTED
1-10 years 3.2 or less mcg/g creatinine
11-17 years 3.0 or less mcg/g creatinine
≥ 18 years 1.7 or less mcg/g creatinine

1-10 years 10.1-254.7 mcg/g creatinine
11-17 years 11.8-107.2 mcg/g creatinine
≥ 18 years 23.0-130.0 mcg/g creatinine

Total Porphyrins:
1-10 years 17.0-269.7 mcg/g creatinine
11-17 years 16.4-121.5 mcg/g creatinine
≥ 18 years 31.0-139.0 mcg/g creatinine
Synonyms Porphyria
Stability Refrigerated 1 week, frozen 1 month

Note samples must be protected from light
Turn around times Test set up 5x per week, Turnaround 5-7 days
CPT coding 84120-90
Last Updated 3/24/2013 8:00:04 PM
Entry Number 1343
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