Please click on a test name to see more information. 

For Reference Ranges related to any specific test please email refranges@tdlpathology.com 

Important notice regarding biotin interference in laboratory tests – please click here to read our update

 

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G6PD

Code

Sample Reqs

Turnaround

G6PD

A

5 days

Special instructions

 

Gabapentin

Code

Sample Reqs

Turnaround

GABA

B  [4]

5 days

Special instructions

[4] Send to the laboratory without delay.

Galactomanan (Aspergillus Antigen)

Code

Sample Reqs

Turnaround

SGAL

B

2 weeks

Special instructions

 

Galactose-1-Phosphate Uridyltransferase

Code

Sample Reqs

Turnaround

GAL1

H  [5] [6]

2 weeks

Special instructions

[5] Do not send sample to the laboratory between Friday noon and Monday morning. [6] Contact the Referrals Department before taking and sending sample to the laboratory.

Galactosidase – Alpha

Code

Sample Reqs

Turnaround

GALA

J

6 weeks

Special instructions

Sample must reach TDL Referrals Dept. Urgently, to be tested within 24hrs of collection. MON - THURS only. Referrals to send Immediately.

Gall Stone Analysis

Code

Sample Reqs

Turnaround

RSTA

STONE

10 days

Special instructions

 

Gamma GT

Code

Sample Reqs

Turnaround

GGT

B 

4 hrs

Special instructions

 

Ganglionic Acetylcholine Receptor Antibodies

Code

Sample Reqs

Turnaround

GACA

B 

1 month

Special instructions

 

Ganglioside GM1, GD1B, GQ1B Abs

Code

Sample Reqs

Turnaround

GANG

B

5 days

Special instructions

 

Gardnerella vaginalis by PCR

Code

Sample Reqs

Turnaround

GVPC

FCRU / PCR / TPV

2 days

Special instructions

 

Gastric Parietal Autoantibodies

Code

Sample Reqs

Turnaround

GASP

B

2 days

Special instructions

 

Gastrin

Code

Sample Reqs

Turnaround

GAST

B (Frozen) 

5 days

Special instructions

 

Genetic Reproductive Profile (Male) 

Code

Sample Reqs

Turnaround

GRP 

A H  [9]

10-15 days

Special instructions

[9] Clinical history must be provided.

Genetics (TDL Genetics)

Code

Sample Reqs

Turnaround

 

 

 

Special instructions

 

Gentamicin Assay

Code

Sample Reqs

Turnaround

GENT

B  [4]

4 hrs

Special instructions

[4] Send to the laboratory without delay.

Giardia Antigen (Fresh Stool)

Code

Sample Reqs

Turnaround

GIAG

RF  [9] [14]

2 days

Special instructions

[9] Clinical history must be provided. [14] Provide details of travel history.

Giardia Serology

Code

Sample Reqs

Turnaround

GIAR

B 

5 days

Special instructions

 

Gliadin Antibodies (IgG) (deamidated )

Code

Sample Reqs

Turnaround

AGAB

B

2 days

Special instructions

 

Globulin

Code

Sample Reqs

Turnaround

GLOB

B 

4 hrs

Special instructions

 

Glomerular Basement Membrane Abs

Code

Sample Reqs

Turnaround

AGBM

B

2 days

Special instructions

 

Glucagon

Code

Sample Reqs

Turnaround

GLUG

J [1]

10 days

Special instructions

[1] Contact the laboratory for special sample tubes/containers/instructions.

Glucose

Code

Sample Reqs

Turnaround

RBG

G 

4 hrs

Special instructions

 

Glucose Challenge Test / Mini-GTT

Code

Sample Reqs

Turnaround

RBGM

G

1 day

Special instructions

 

Glucose Tolerance Test (Short)

Code

Sample Reqs

Turnaround

GTTS

2 x G 2 x RU

1 day

Special instructions

 

Glucose Tolerance Test (Extended Plus)

Code

Sample Reqs

Turnaround

GTTX

7x G 7x RU

1 day

Special instructions

 

Glucose Tolerance Test (Extended)

Code

Sample Reqs

Turnaround

GTTE

5 x G 5 x RU

1 day

Special instructions

 

Glucose Tolerance with Growth Hormone

Code

Sample Reqs

Turnaround

GTT  + GHDF

3 x B  [35], 3 x G 3 x RU

1 day

Special instructions

[35] Patient should be fasting and resting for 30 mins before sample taking. Samples need handling urgently.

Glucose Tolerance with Insulin

Code

Sample Reqs

Turnaround

GTTI

3 x B 3 x G 3 x RU

1 day

Special instructions

 

Glucose Tolerance Test / OGTT

Code

Sample Reqs

Turnaround

GTT

3 x G 3 x RU

1 day

Special instructions

 

Glutamic Acid Decarboxylase Antibodies (GAD 65)

Code

Sample Reqs

Turnaround

GAD

B 

5 days

Special instructions

 

Glutathione (Red Cell)

Code

Sample Reqs

Turnaround

GLUR

H  [5]

5 days

Special instructions

[5] Do not send sample to the laboratory between Friday noon and Monday morning.

Glutathione Peroxidase

Code

Sample Reqs

Turnaround

GLPX

H 

5 days

Special instructions

 

CHANGE

Gluten Allergy Profile

Code

Sample Reqs

Turnaround

GLUT

A B B

10 days

Special instructions

 

CHANGE

Gluten Sensitivity Evaluation

Code

Sample Reqs

Turnaround

GSA

B

2 days

Special instructions

 

CHANGE

Gluten/Coeliac Profile 2

Code

Sample Reqs

Turnaround

GSA2

A B

10 days

Special instructions

 

Glycan Determinants

Code

Sample Reqs

Turnaround

ZZ27

B

2 days

Special instructions

 

Gonorrhoea (Culture)

Code

Sample Reqs

Turnaround

GONN

STM

2-3 days

Special instructions

 

Gonorrhoea (PCR swab)

Code

Sample Reqs

Turnaround

SGON

PCR

2 days

Special instructions

 

Gonorrhoea (Thin Prep)

Code

Sample Reqs

Turnaround

TGON

TPV

2 days

Special instructions

 

Gonorrhoea (Urine)

Code

Sample Reqs

Turnaround

CGON

FCRU

2 days

Special instructions

 

Granulocyte Immunology

Code

Sample Reqs

Turnaround

GRIM

A A

2 weeks

Special instructions

 

Group B Strep

Code

Sample Reqs

Turnaround

GBS

2 x STM

3-4 days

Special instructions

 

Growth Hormone (Fasting)

Code

Sample Reqs

Turnaround

GH

B  [7] [35]

4 hrs

Special instructions

[7] Sample should be separated and frozen if sending overnight. [35] Patient should be fasting and resting for 30 mins before sample taking. Samples need handling urgently.

Gut Hormone Profile

Code

Sample Reqs

Turnaround

GUTP

A A (Frozen within 15 minutes)  [41]

3 weeks

Special instructions

[41] Recommendation for patient to attend Patient Reception for sample taking.