Immunoglobulin G (IgG)

SIM

50165 

CPT

82784 

Synonyms

IgG 

Specimen Type

Plasma or serum 

Container

3.5 ml Green - Lithium heparin plasma separator 
4.0 ml Gold-top serum separator Green

Collection Instructions

None

Volume

2 ml plasma or serum 
Min: 0.5 ml

Additional Information

None

Patient Preparation

None

Specimen Processing Instructions

Plasma:  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Centrifuge within 2 hours of collection.

Transport Requirements

Refrigerated

Specimen Stability

Refrigerated: 5 days;  Room temp: 8 hours 

Rejection Criteria

•  If not centrifuged within 2 hours of collection. 
•  Gross Hemolysis

Reference Range

0 day – 3 months = 275 - 1230 mg/dl

4 months – 24 months = 286 - 1680

25 months – 4 years = 341 - 1960

5 years – 19 years = 528 - 2190

20 years - Adult = 481-1650 mg/dl

Critical Value

none 

Test Includes

IgG 

Methodology

Turbidimetric method 

Testing Frequency

Daily, Monday - Sunday 

Reviewed By

Crystal M. Killian

Reviewed Date

3/18/2021

Supplemental