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@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

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Lactate (Plasma)

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)

Sample Reqs

B

Lactate Pyurvate Ratio

Sample Reqs

J [1]

Special Instructions

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

Lamotrigine

Sample Reqs

B [4]

Special Instructions

[4] Send to the laboratory without delay.

Latex Components

Sample Reqs

B

LDH lsoenzymes

Sample Reqs

B

LDL7 Subfractions

Sample Reqs

B

Lead (Blood)

Sample Reqs

A

Lead (Urine)

Sample Reqs

RU

Lead Profile (Hb, ZPP, Lead)

Sample Reqs

A [13]

Special Instructions

[13] Protect from light.

Legionella Antibodies

Sample Reqs

B

Legionella Urine Antigen

Sample Reqs

RU

Leishmania Antibodies

Sample Reqs

B

Leishmania Antibodies

Sample Reqs

A

Leptin

Sample Reqs

B [19]

Special Instructions

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

Leptospirosis (Weil’s Disease) Abs (IgM)

Sample Reqs

B

Leucine Amino Peptidase

Sample Reqs

B

Leucocyte Antibody Detection Panel FEMALE

Sample Reqs

B [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.
Must also arrive with partners 7RF samples.

Leucocyte Antibody Detection Panel MALE

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.
Must also arrive with partners 8RF samples.

Leukotriene E4

Sample Reqs

CU (Frozen)

Levetiracetam (Keppra)

Sample Reqs

B [4]

Special Instructions

[4] Send to the laboratory without delay.

Lipase

Sample Reqs

B

Lipid Profile

Sample Reqs

B

Lipid Transfer Proteins

Sample Reqs

B

Lipocalins

Sample Reqs

B

Lipoprotein (a)

Sample Reqs

B

Lipoprotein Electrophoresis

Sample Reqs

B

Listeria Antibody

Sample Reqs

B

Lithium (take 12 hrs after dose)

Sample Reqs

B

Liver Fibrosis (Enhanced Liver Fibrosis ELF) Code

Sample Reqs

B

Liver Fibrosis Fibrotest

Sample Reqs

B

Liver Function Tests

Sample Reqs

B

Liver Kidney Microsomal Antibodies

Sample Reqs

B

Lorazepam

Sample Reqs

A [4]

Special Instructions

[4] Send to the laboratory without delay.

Lp-PLA2 (PLAC) Test

Sample Reqs

B

LSD

Sample Reqs

RU

Lupus Anticoagulant only

Sample Reqs

C 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

Sample Reqs

B [13]

Special Instructions

[13] Protect from light.

Luteinising Hormone (LH)

Sample Reqs

B

Lycopene

Sample Reqs

B

Lyme Disease (Borrelia Abs) IgG, IgM

Sample Reqs

B [9] [14]

Special Instructions

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

Lyme Disease (Borrelia Abs) IgM

Sample Reqs

B

Lymphocyte Immunophenotyping (Leukaemia)

Sample Reqs

A [4] [5]

Special Instructions

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

Lymphocyte Subsets (CD3 / CD4 / CD8)

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].

Lysosomal Enzyme Screen

Sample Reqs

H H [6]

Special Instructions

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

Lysozyme

Sample Reqs

B

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

Sample Reqs

CVS / AF / AH [9]

Special Instructions

9 Clinical history must be provided.

Langer-Giedion Syndrome – BOBs only

Sample Reqs

CVS / AF / A [9]

Special Instructions

9 Clinical history must be provided.

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

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

Sample Reqs

A[9]

Special Instructions

9 Clinical history must be provided.



Left Ventricular Non-Compaction (LVNC) NGS Panel – full sequencing across 24 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Leigh Syndrome NGS Panel – full sequencing across 75 genes + deletions/duplications + mitochondrial DNA

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

LEOPARD/Noonan/Cardio-Facio-Cutaneous/Costello Syndromes NGS Panel – full sequencing across 15 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Leucocyte β-glucosidase activity (Gaucher disease)

Sample Reqs

A

Leukaemia Fusion Gene Screening Assay (Q30)

Sample Reqs

A

Leukaemic Studies (Bone Marrow) – please send with complete Leukaemic Studies Request form at back of guide

Sample Reqs

Contact Lab AH [9] [11]

Special Instructions

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

Leukoencephalopathy NGS Panel – full sequencing across 28 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

LGV PCR

Sample Reqs

Chlamydia swab

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

Sample Reqs

Requires patient informed consent A [9] [11]

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 33 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Lissencephaly NGS Panel – full sequencing across 51 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

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

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Long-QT Syndrome NGS Panel – full sequencing across 16 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Lowe (Oculocerebrorenal) Syndrome – OCRL sequencing + large deletions

Sample Reqs

A[9]

Special Instructions

9 Clinical history must be provided.

Lung Disorders NGS Panel – full sequencing across 51 genes

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

Lynch Syndrome (HNPCC) NGS Panel – full sequencing across 16 genes + deletions/duplications

Sample Reqs

Requires patient informed consent AA [9] [11]

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

Sample Reqs

A,A[9]

Special Instructions

9 Clinical history must be provided.

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

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