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Lab Manual for UCSF Clinical Laboratories

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Item Value
Approval req'd? No
Available Stat? No
Test code SERO
Performed by Quest
Sendout? Yes
Method HPLC
Patient Preparation The patient should avoid foods high in indoles for 3 days prior to specimen collection: avocado, banana, eggplant, pineapple, plum, tomato and walnut, as well as avoiding coffee, tea and tobacco.
Collection Instructions Obtain special collection kit from Specimen Receiving Desk (M521). The specimen collection kit will include a lavender top tube and a special plastic vial containing ascorbic acid. After drawing the specimen into the lavender top tube, mix well and deliver to laboratory asap.
Container type Obtain special collection kit from specimen receiving desk (M521).
Amount to Collect 4 mL blood
Sample type Blood
Preferred volume 4 mL blood
Min. Volume 1.1 mL blood
Processing notes Transfer whole blood into the plastic vial, mix well and freeze at -20C. Do NOT centrifuge. Order Quest # 29397P.
Units µg/L (mcg/L)
Normal range
≥ 18 year olds 55-260 µg/L
Turn around times Test run Monday-Saturday. Turnaround time: 2-5 days.
Additional information To convert µg/L to µmol/L (SI units) multiply by 0.00568.

For testing on urine see 5-HIAA.
CPT coding 84260-90
LOINC code 2939-7
Last Updated 6/21/2016 12:19:52
Entry Number 850
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