A - Z Test List

Test List: L

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

For reference ranges related to any specific test, please email refranges@www.hslpathology.com

Please note this list may not show our full repertoire of tests. If you need further information, please call +44 (0) 20 7307 9400

Please click here to read our user guide. More user guides will be available soon.

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

Expand All | Collapse All

Lactate (Plasma)

Code

LACT

Sample Reqs

G [16]

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

LDH

Sample Reqs

B

Special Instructions

Lactate Pyurvate Ratio

Code

LPR

Sample Reqs

J [1]

Special Instructions

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

Lactose Intolerance Gene

Code

LACG

Sample Reqs

A
 

Special Instructions

Lactose Tolerance Test

Code

LTT

Sample Reqs

By appointment only

Special Instructions

Collection time (minutes post-glucose): Contact 020 7025 7997 (Phlebotomy)

Lamotrigine

Code

LAMO

Sample Reqs

B [4]

Special Instructions

[4] Send to the laboratory without delay.

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

Code

PBOB, KARY

Sample Reqs

CVS / AF / A
H
[9]

Special Instructions

[9] Clinical history must be provided.

Langer-Giedion Syndrome – BOBs only

Code

PBOB

Sample Reqs

CVS / AF / A
[9]

Special Instructions

[9] Clinical history must be provided.

Latex Components

Code

ZZ13

Sample Reqs

B

Special Instructions

LDH lsoenzymes

Code

ISOL

Sample Reqs

B

Special Instructions

LDL7 Subfractions

Code

LDL7

Sample Reqs

B

Special Instructions

Lead (Blood)

Code

LEAD

Sample Reqs

A

Special Instructions

Lead (Urine)

Code

URPB

Sample Reqs

RU

Special Instructions

Lead Profile (Hb, ZPP, Lead)

Code

LEAZ

Sample Reqs

A [13]

Special Instructions

[13] Protect from light.

Leber’s Congenital Amaurosis NGS Panel – full sequencing across 32 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Lebers Hereditary Optic Neuropathy – m.3460G>A + m.11778G>A + m.14484T>C common mutations

Code

GENE

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Legionella Antibodies

Code

LEGO

Sample Reqs

B

Special Instructions

Legionella Urine Antigen

Code

LEGA

Sample Reqs

RU

Special Instructions

Leigh Syndrome NGS Panel – full sequencing across 78 genes + deletions/duplications + mitochondrial DNA

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Leishmania Antibodies

Code

LEIS

Sample Reqs

B

Special Instructions

LEOPARD/Noonan/Cardio-Facio-Cutaneous/Costello Syndromes NGS Panel – full sequencing across 20 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Leptin

Code

LEPT

Sample Reqs

B [19]

Special Instructions

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

Leptospirosis (Weil’s Disease) Abs (IgM)

Code

LEP

Sample Reqs

B

Special Instructions

Leucine Amino Peptidase

Code

LAP

Sample Reqs

B

Special Instructions

Leucocyte Antibody Detection Panel FEMALE

Code

8RF

Sample Reqs

B

Special Instructions

Patients who have samples taken at TDL’s Patient Reception at 76 Wimpole Street may attend any time during hours of opening on Mondays or Tuesdays, and by NOON on Wednesdays to allow for same day shipping to Chicago by Fed Ex. Samples for Rosalind Franklin are not accepted on Thursdays, Fridays or Saturdays. Fed Ex charges are included in these charges.

Leucocyte Antibody Detection Panel MALE

Code

7RF

Sample Reqs

H H H [3] [4] [6]

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.

Patients who have samples taken at TDL’s Patient Reception at 76 Wimpole Street may attend any time during hours of opening on Mondays or Tuesdays, and by NOON on Wednesdays to allow for same day shipping to Chicago by Fed Ex. Samples for Rosalind Franklin are not accepted on Thursdays, Fridays or Saturdays. Fed Ex charges are included in these charges.

Leukaemia Fusion Gene Screening Assay (Q30)

Code

LMPX

Sample Reqs

A

Special Instructions

Leukaemia Immunophenotyping

Code

LYPT

Sample Reqs

A [4] [5]

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

LTE4

Sample Reqs

CU (Frozen)

Special Instructions

Levetiracetam (Keppra)

Code

LEVE

Sample Reqs

B [4]

Special Instructions

[4] Send to the laboratory without delay.

Li-Fraumeni Syndrome (p53-related cancer predisposition) – TP53 sequencing + MLPA

Code

GENE

Sample Reqs

A
[9] [11] Requires patient informed consent

Special Instructions

[9] Clinical history must be provided.
[11] Patient consent required. Consent Form can be found at the back of this guide.

Limb-Girdle Muscular Dystrophy (LGMD) NGS Panel – full sequencing across 34 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Lipase

Code

LIPA

Sample Reqs

B

Special Instructions

Lipid Profile

Profile details

Triglycerides

Cholesterol

HDL Cholesterol

LDL Cholesterol

Non-HDL Cholesterol

Code

LIPP

Sample Reqs

B 

Special Instructions

 

Lipid Transfer Proteins

Code

ZZ23

Sample Reqs

B

Special Instructions

Lipocalins

Code

ZZ28

Sample Reqs

B

Special Instructions

Lipoprotein (a)

Code

LPOA

Sample Reqs

B

Special Instructions

Lipoprotein Electrophoresis

Code

LEL

Sample Reqs

B

Special Instructions

Lissencephaly NGS Panel – full sequencing across 14 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Listeria Antibody

Code

LIST

Sample Reqs

B

Special Instructions

Lithium (take 12 hours after dose)

Code

LITH

Sample Reqs

B

Special Instructions

Liver Fibrosis (Enhanced Liver Fibrosis ELF)

Code

ELF

Sample Reqs

B

Special Instructions

Liver Fibrosis Fibrotest

Code

FIBT

Sample Reqs

B

Special Instructions

Liver Function Tests

Profile details

Bilirubin

ALT

AST

Total Protein

Alkaline Phos

Albumin

Globulin

Gamma-GT

Code

LFT

Sample Reqs

B 

Special Instructions

 

Liver Immunoblot

Code

LIV1

Sample Reqs

B

Special Instructions

Liver Kidney Microsomal Antibodies

Code

LKM

Sample Reqs

B

Special Instructions

Loeys-Dietz Syndrome/Marfan Syndrome/Aortopathy NGS Panel – full sequencing across 26 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Long-QT Syndrome / Brugada Syndrome – full sequencing across 34 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Lorazepam

Code

LORA

Sample Reqs

A [4]

Special Instructions

[4] Send to the laboratory without delay.

Lowe (Oculocerebrorenal) Syndrome – OCRL sequencing + large deletions

Code

GENE

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Lp-PLA2 (PLAC) Test

Code

PLA2

Sample Reqs

B

Special Instructions

LSD

Code

LSD

Sample Reqs

RU

Special Instructions

Lung – Biopsy: Lung Biopsy

Code

HIS3

Sample Reqs

Special Instructions

Lung – Resections: Lung Lesion Small Wedge Resection

Code

HIS3

Sample Reqs

Special Instructions

Lung – Resections: Lung Resection

Code

HIS5+HIS5

Sample Reqs

Special Instructions

Lung – Resections: Lung Tumour Resection +/- Nodes

Code

HIS5

Sample Reqs

Special Instructions

Lung Disorders NGS Panel – full sequencing across 51 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Lupus Anticoagulant and Anticardiolipin Abs

Code

LUPA

Sample Reqs

B C [4] [18]

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

LUPC

Sample Reqs

C [18]

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

LUTE

Sample Reqs

B [13]

Special Instructions

[13] Protect from light.

Luteinising Hormone (LH)

Code

LH

Sample Reqs

B

Special Instructions

Lycopene

Code

LYCO

Sample Reqs

B

Special Instructions

Lyme Disease (Borrelia Abs) IgG, IgM

Code

BORR

Sample Reqs

B [9] [14]

Special Instructions

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

Lyme Disease (Borrelia Abs) IgM

Code

BORM

Sample Reqs

B

Special Instructions

Lymphocyte Subsets (CD3/CD4/CD8)

Code

LYSS

Sample Reqs

A [10] / Chex

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).

Lymphogranuloma Venerium (LGV)

Code

LGVP

Sample Reqs

PCR* [42]

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.

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

Lynch Syndrome (HNPCC) NGS Panel – full sequencing across 18 genes + deletions/duplications

Code

GENE

Sample Reqs

A
A
[9] [11] Requires patient informed consent

Special Instructions

[9] Clinical history must be provided.
[11] Patient consent required. Consent Form can be found at the back of this guide.

Lysosomal Disorders NGS Panel – full sequencing across 106 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Lysosomal Enzyme Screen

Code

LE

Sample Reqs

H H [6]

Special Instructions

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

Lysozyme

Code

LYSO

Sample Reqs

B

Special Instructions

Contact Us

HSL is a partnership between The Doctors Laboratory, Royal Free London NHS Foundation Trust (the Royal Free London) and University College London Hospitals NHS Foundation Trust (UCLH)

Health Services Laboratories
Health Services Laboratories
Health Services Laboratories