Intrinsic factor antibodies, serum

Alphabetical Test listing

Intrinsic factor antibodies, serum-13349

Test name:

Test number:

13349

Excellian order number:

LAB13349

Abbreviation:

IFA

Alternate names:

Intrinsic factor Abs, serum

Useful for:

Confirming the diagnosis of pernicious anemia (PA) caused by intrinsic factor deficiency

Patient preparation information:

No specimen should be collected from a patient currently undergoing B12 therapy less than one week after the last B12 injection.

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

2.0 mL

Minimum volume:

1.0 mL
Submission of the minimum volume does not allow for repeat testing

Collection instructions:

Immediatley following collection, mix sample by gently inverting 5 times

Processing instructions:

1. Allow sample to clot for a minimum of 30 minutes
2. Spin within two (2) hours of sample collection

Transport container:

Gold serum separator (SST) tube

Alternate collection container:

Red serum vial/tube, 5 mL

Alternate processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Alternate transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Transport and stability:

Refrigerated (preferred) - 14 days

Ambient - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x 3

Reason for rejection:

Plasma specimen

Performing lab:

LabCorp Burlington (010413): R-LC

Days set up:

Mo - Fr

TAT:

2 - 4 days

Method:

Immunochemiluminometric assay (ICMA)

Reference ranges:

0.0 - 1.1 AU/mL

CPT codes:

86340

LOINC code:

Result 31443-5

Date created:

04/09/2019

Revised date:

11/15/2019

Review date:

12/29/2023