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Lab Test Dictionary

Isohemagglutinin Titer, Limited


1:32 Dilution at Room Temp


ABO Titer, Titer

Specimen Type

Serum or Plasma

Performing Lab

RCHSD Blood Bank

Epic ID


Lab Test Days

As received

Standard TAT

2 Hours

Stat TAT

30 Min

Collection Information

Specimen Required

3 mL Blood

Container Type

Lavender (EDTA)

Collection Instructions

Specimens must be double initialed by the collecting nurse and a nurse that verifies the patient's identify against the order, specimen label and patient demographics. Specimen must not be hemolyzed. For ABOi heart transplants only to be performed at baseline, while on waiting list, and post operatively days 2-14.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

3 Days

Rejection Criteria

Not double initaled, hemolyzed, quantity not sufficient

Test Volume Required

1.5 mL of plasma or serum

Minimum Test Volume

1.5 mL of plasma or serum

Processing Instructions

Deliver to Blood Bank.

Included Tests

A1 and/or A2 and/or B titer(s) based on patient ABO type


For ABOi heart transplants only. Can be done at initial listing and/or while on waiting list if outside normal hours and on weekends. Red Top also acceptable.

CPT Codes