gp 210 IgG

Label Mnemonic:	GP210
Epic code:	LAB8732
Downtime form:	A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Serum

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

Preferred Minimum: 1.0 mL serum in red top tube
Absolute Minimum: 0.1 mL serum in red top tube

Rejection Criteria:

Contaminated or heat-inactivated specimens.

Testing Schedule:

Test performed on Wednesdays.

Turn Around Time:

1-8 days upon receipt at reference laboratory.

Reference Range:

20.0 Units or less       Negative
20.1-24.9 Units          Equivocal
25.0 Units or greater    Positive

Interpretive Data:

GP210 IgG antibodies can be detected in patients with primary biliary cholangitis (PBC) and may be of diagnostic relevance in a subset of patients with PBC who are negative for anti-mitochondrial antibodies (AMA). These antibodies have a relatively low sensitivity with excellent specificity for PBC. A negative result does not rule out PBC.

Methodology:

Semi-Quantitative Enzyme-Linked Immunosorbent Assay

CPT Code:

83516