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Crossmatch
| Item | Value | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Approval req'd? | No | ||||||||||||||
| Available Stat? | Yes | ||||||||||||||
| Test code | XM-Standard XMAG-w/ Coombs XMPW-w/ prewarming to 37C XMPG-w/ Ployethylene Glycol (PEG) |
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| Performed by | Blood Bank | ||||||||||||||
| In House Availability | Test available 24 hours per day 7 days per week | ||||||||||||||
| Collection Instructions | Use BLOOD BANK requisition. Specimen label must contain the date the sample was collected and the legible name of the person who collected the sample. | ||||||||||||||
| Container type | Lavender top (6 mL size preferred) | ||||||||||||||
| Amount to Collect | 6 mL blood | ||||||||||||||
| Sample type | EDTA whole blood | ||||||||||||||
| Preferred volume |
Check Specimen:
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| Min. Volume |
Check Specimen:
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| UCSF Rejection Criteria | Unsigned, mislabeled or unlabeled sample | ||||||||||||||
| Normal range | See Additional Information | ||||||||||||||
| Turn around times | STAT 1 hour, ASAP 2 hours, Routine 4 hours | ||||||||||||||
| Additional information | 3 mL may suffice for an infant < 4 months old if blood is not needed to cover surgical losses. This test is always ordered in conjunction with a separately charged Blood Typing and Antibody Screen, and cannot be ordered by itself. The Coombs test is employed when the antibody screen is positive; the various other modifications to the standard crossmatch are used to overcome the effects of non-specific cold-reactive antibodies. see also HLA Crossmatch |
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| Last Updated | 2/19/2010 3:38:28 PM | ||||||||||||||
| Entry Number | 268 |
If you have additional questions regarding this test, please call: 415-353-1667