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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Lactate (Plasma)

Code

Sample Reqs

Turnaround

LACT

G  [16]

1 day

Special instructions

[16] Lactate. Sample: Fluoride oxalate plasma only. On ice and separate from cells 15-30 mins, analyse promptly. Handle with care as sweat contains large amounts of lactate. No tourniquet. Patient: Rest 30 mins prior to test.

Lactate Dehydrogenase (LDH)

Code

Sample Reqs

Turnaround

LDH

B 

4 hrs

Special instructions

 

Lactate Pyurvate Ratio

Code

Sample Reqs

Turnaround

LPR

J  [1]

4-6 weeks

Special instructions

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

Lactose Tolerance Test

Code

Sample Reqs

Turnaround

LTT

By appointment only

1 day

Special instructions

 

Lamotrigine

Code

Sample Reqs

Turnaround

LAMO

B  [4]

5 days

Special instructions

[4] Send to the laboratory without delay.

Langer-Giedion Syndrome – BOBs (5 days) + karyotype (15 days)

Code

Sample Reqs

Turnaround

PBOB, KARY 

CVS / AF / A , H  [9]

5-15 days

Special instructions

[9] Clinical history must be provided.

Langer-Giedion Syndrome – BOBs only

Code

Sample Reqs

Turnaround

PBOB 

CVS / AF / A   [9]

5 days

Special instructions

[9] Clinical history must be provided.

Latex Components

Code

Sample Reqs

Turnaround

ZZ13

B

2 days

Special instructions

 

LDH lsoenzymes

Code

Sample Reqs

Turnaround

ISOL

B 

5 days

Special instructions

 

LDL7 Subfractions

Code

Sample Reqs

Turnaround

LDL7

B 

10 days

Special instructions

 

Lead (Blood)

Code

Sample Reqs

Turnaround

LEAD

A 

5 days

Special instructions

 

Lead (Urine)

Code

Sample Reqs

Turnaround

URPB

RU

5 days

Special instructions

 

Lead Profile (Hb, ZPP, Lead)

Code

Sample Reqs

Turnaround

LEAZ

A  [13]

3-5 days

Special instructions

[13] Protect from light.

Legionella Antibodies

Code

Sample Reqs

Turnaround

LEGO

B

2 days

Special instructions

 

Legionella Urine Antigen

Code

Sample Reqs

Turnaround

LEGA

RU

1 day

Special instructions

 

Leishmania Antibodies

Code

Sample Reqs

Turnaround

LEIS

B

5 days

Special instructions

 

Leptin

Code

Sample Reqs

Turnaround

LEPT

B  [19]

5 days

Special instructions

[19] Must include patient’s age, height and weight.

Leptospirosis (Weil’s Disease) Abs (IgM)

Code

Sample Reqs

Turnaround

LEP

B 

5 days

Special instructions

 

Leucine Amino Peptidase

Code

Sample Reqs

Turnaround

LAP

B 

5 days

Special instructions

 

Leucocyte Antibody Detection Panel FEMALE

Code

Sample Reqs

Turnaround

8RF

B

1 week

Special instructions

 

Leucocyte Antibody Detection Panel MALE

Code

Sample Reqs

Turnaround

7RF

H H H  [3] [4] [6]

1 week

Special instructions

[3] Clinical history essential and protect from light. [4] Send to the laboratory without delay. [6] Contact the Referrals Department before taking and sending sample to the laboratory.

Leukaemia Immunophenotyping

Code

Sample Reqs

Turnaround

LYPT

A  [4] [5]

5 days

Special instructions

[4] Send to the laboratory without delay. [5] Do not send sample to the laboratory between Friday noon and Monday morning.

Leukotriene E4

Code

Sample Reqs

Turnaround

LTE4

CU (Frozen)

3 weeks

Special instructions

 

Levetiracetam (Keppra)

Code

Sample Reqs

Turnaround

LEVE

B  [4]

3 days

Special instructions

[4] Send to the laboratory without delay.

Lipase

Code

Sample Reqs

Turnaround

LIPA

B 

4 hrs

Special instructions

 

Lipid Profile

Code

Sample Reqs

Turnaround

LIPP

B 

4 hrs

Special instructions

 

Lipid Transfer Proteins

Code

Sample Reqs

Turnaround

ZZ23

B

2 days

Special instructions

 

Lipocalins

Code

Sample Reqs

Turnaround

ZZ28

B

2 days

Special instructions

 

Lipoprotein (a)

Code

Sample Reqs

Turnaround

LPOA

B 

4 hrs

Special instructions

 

Lipoprotein Electrophoresis

Code

Sample Reqs

Turnaround

LEL

B 

5 days

Special instructions

 

Listeria Antibody

Code

Sample Reqs

Turnaround

LIST

B 

1 week

Special instructions

 

Lithium (take 12 hrs after dose)

Code

Sample Reqs

Turnaround

LITH

B

4 hrs

Special instructions

 

Liver Fibrosis (Enhanced Liver Fibrosis ELF)

Code

Sample Reqs

Turnaround

ELF

B 

5-7 days

Special instructions

 

Liver Fibrosis Fibrotest

Code

Sample Reqs

Turnaround

FIBT

B 

2 weeks

Special instructions

 

Liver Function Tests

Code

Sample Reqs

Turnaround

LFT

B 

4 hrs

Special instructions

 

Liver Kidney Microsomal Antibodies

Code

Sample Reqs

Turnaround

LKM

B

2 days

Special instructions

 

Lorazepam

Code

Sample Reqs

Turnaround

LORA

A  [4]

10 days

Special instructions

[4] Send to the laboratory without delay.

Lp-PLA2 (PLAC) Test

Code

Sample Reqs

Turnaround

PLA2

B 

2 days

Special instructions

 

LSD

Code

Sample Reqs

Turnaround

LSD

RU

5 days

Special instructions

 

Lupus Anticoagulant and Anticardiolipin Abs

Code

Sample Reqs

Turnaround

LUPA

B C  [4] [18]

2 days

Special instructions

[4] Send to the laboratory without delay. [18] Citrate Samples. Samples should be double spun and separated and frozen within 4-8 hours of sample taking, if a delay is expected with transportation to the laboratory, samples must be transported as frozen.

Lupus Anticoagulant only

Code

Sample Reqs

Turnaround

LUPC

C  [18]

2 days

Special instructions

[18] Citrate Samples. Samples should be double spun and separated and frozen within 4-8 hours of sample taking, if a delay is expected with transportation to the laboratory, samples must be transported as frozen.

Lutein

Code

Sample Reqs

Turnaround

LUTE

B  [13]

2 weeks

Special instructions

[13] Protect from light.

Luteinising Hormone (LH)

Code

Sample Reqs

Turnaround

LH

B

4 hrs

Special instructions

 

Lycopene

Code

Sample Reqs

Turnaround

LYCO

B 

2 weeks

Special instructions

 

Lyme Disease (Borrelia Abs) IgG, IgM

Code

Sample Reqs

Turnaround

BORR

B  [9] [14]

2 days

Special instructions

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

Lyme Disease (Borrelia Abs) IgM

Code

Sample Reqs

Turnaround

BORM

B

2 days

Special instructions

 

Lymphocyte Subsets (CD3/CD4/CD8)

Code

Sample Reqs

Turnaround

LYSS

A  [10] / Chex

1 day

Special instructions

[10] Contact the laboratory for special stability tubes for lymphocyte subsets – or take an EDTA sample and ensure same day delivery to the laboratory, Monday to Friday noon (do not send sample between Friday noon and Monday morning).

NEW

Lymphogranuloma Venerium (LGV)

Code

Sample Reqs

Turnaround

LGVP

PCR*  [42]

1-2 weeks

Special instructions

[42] LGV can be added to a positive chlamydia sample using the same swab if requested within 4 days of receipt of result.

Lysosomal Enzyme Screen

Code

Sample Reqs

Turnaround

LE

H H  [6]

2 months

Special instructions

[6] Contact the Referrals Department before taking and sending sample to the laboratory.

Lysozyme

Code

Sample Reqs

Turnaround

LYSO

B 

5 days

Special instructions