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Lab Manual for Moffitt-Long and Mount Zion

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O.D. 450 Peak, Delta

Item Value
Approval req'd? No
Available Stat? No
Test code OD45
Performed by UC Irvine
Sendout? Yes
Method Method of Freda & Liley
Collection Instructions Indicate the week of geSTNIstation on the requisition
Container type Clean screw-capped tube shielded from light
Amount to Collect See preferred volume
Sample type Amniotic fluid
Preferred volume 7 mL amniotic fluid
Processing notes Freeze sample at -20C in dark or foil wrapped container. Ship via Fed Ex on dry ice to Special Chemistry Lab, Route 80, UC Irvine Medical Center, 101 Orange Drive South, Orange, CA 92868 (714) 456-5548.

Indicate the week of gestation on the requisition and request that the report be telephoned to (415)353-1667 and the actual log graph faxed to (415)353-1346. Order UCI test AMBILI and call Fex Ex for pickup.)
Normal range Method of Freda:
1+ Normal or possibly affected < 0.20
2+ Affected but not in jeopardy within 7 days 0.20-0.34
3+ Distressed and probably in failure 0.35-0.70
4+ Impending fetal death > 0.70


Method of Liley:
Week of gestation Normal Borderline
25 < 0.08 0.08-0.33
30 < 0.05 0.05-0.21
35 < 0.03 0.03-0.13
40 < 0.02 0.02-0.08
Synonyms OD450; Bile; Unconjugated bilirubin; Optical density 450; bilirubin
Turn around times Test performed daily. Turnaround time: 1 day.
Additional information The interpretive criteria described above are well summarized by Robertson, JG. Amer J Obstet Gynec 1966;95,120.
CPT coding 82143-90
LOINC code 14335-4
Last Updated 3/24/2013 8:13:19 PM
Entry Number 691

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

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