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C1Q / Donor Specific Antibody Screen

Important Note

Collect routine samples Su - Th.  Samples must be recieved by Stanford 1 pm on Fridays.

Clinical System Name

Miscellaneous Test



Sample Requirements

Specimen: Whole Blood

Container(s): Red

Preferred Vol: 5-7 mL

Minimum Vol: 5 mL


Note: A Stanford Histocompatability Lab requisition must be complete and accompany specimen to lab. Do not use serum separator tubes. Purple tops are NOT acceptable.

Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: 4 C

Storage location: Use the Stanford Histocompatability req. (8½ x 11), to be completed by Send-outs. Fill out as completely as possible, note C1Q in the comments. Place a large Cerner label in the top right corner. Put it and extra labels in the send outs box on the CPA fridge.


Stable for 5 days refrigerated.

Performing Laboratory

Stanford Blood Center

Histocompatibility Laboratory

3373 Hillview Avenue - Palo Alto, CA 94304-1204



Stanford Blood Center

Histocompatibility Laboratory

Phone: 650-723-5548

Fax: 650-723-6350

Send Out Instructions

Send the patient and donor HLA type along with requisition, ambient via FedEx.

Note: They often call with verbal results. You can call the Ref Lab Consultant who is on-call to deliver these results.