Gamma GT

Alphabetical Test listing

Gamma GT-114

Test name:

Gamma GT

Test number:

114

Excellian order number:

82977.0

Abbreviation:

GGT

Alternate names:

Gamma glutamyl transferase
GGT
GGTP

Specimen type:

Lithium heparin (Li hep) plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Minimum volume:

0.2 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting

Processing instructions:

Spin

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Alternate processing instructions:

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

Alternate transport container:

Serum separator (Gold SST) tube

Transport and stability:

Refrigerated (preferred) - 7 days

Ambient - 7 days

Frozen - 1 year

Reason for rejection:

Improper labels (unlabeled or mislabeled)
Hemolysis (some procedures)
Improper anticoagulant or ratio
Delay in transport
Improper storage temperature affecting results
Improper container
Leaking container resulting in compromised specimen
Quantity not sufficient (QNS)

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Enzymatic

Reference ranges:

Architect:

Age	Male	Female
<1 month	23 - 174 IU/L	16 - 140 IU/L
1 - 3 months	16 - 147 IU/L	16 - 140 IU/L
4 - 6 months	5 - 93 IU/L	13 - 123 IU/L
7 - 12 months	8 - 38 IU/L	8 - 59 IU/L
Adult	12 - 64 IU/L	9 - 36 IU/L

Roche:

Males	8 - 61 U/L
Females	5 - 36 U/L

CPT codes:

82977

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Date created:

11/30/2001

Revised date:

12/22/2022

Review date:

11/09/2021