A - Z Test List

Test List: F

# 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

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

Fabry Disease, X-linked – GLA gene sequencing

Code

FABM

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Facioscapulohumeral Muscular Dystropy (FSHD) – D4Z4 repeat deletion

Code

GENE

Sample Reqs

A
A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Factor II Assay

Code

FAC2

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor II Prothrombin – G20210A mutation

Code

FX2

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Factor V Assay

Code

FAC5

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor V Leiden – G1691A mutation

Code

FX5

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Factor VII Assay

Code

FAC7

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor VII Deficiency – F7 Gene Variant Analysis (Known Genotype)

Code

7MA

Sample Reqs

A
A
 (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor VII Deficiency – F7 Gene Variant Analysis (Unknown Genotype)

Code

7MA

Sample Reqs

A
A
  (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor VIII Assay

Code

FAC8

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor VIII Inhibiting Antibody

Code

F8IA

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.

Factor IX Assay

Code

F1X

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor IX Inhibiting Antibody

Code

F9IA

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.

Factor X Assay

Code

FX

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor Xa (Heparin)

Code

FXA

Sample Reqs

C (Frozen)

Special Instructions

Factor X Deficiency – F10 Gene Variant Analysis (Known Genotype)

Code

10MA

Sample Reqs

A
A
  (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor X Deficiency – F10 Gene Variant Analysis (Unknown Genotype)

Code

10MA

Sample Reqs

A
A
  (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor XI Assay

Code

FX1

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor XI Deficiency – F11 Gene Variant Analysis (Known Genotype)

Code

11MA

Sample Reqs

A
A
  (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor XI Deficiency – F11 Gene Variant Analysis (Unknown Genotype)

Code

11MA

Sample Reqs

A
A
  (Whole blood 10ml) [40]

Special Instructions

[40] Informed Consent is required for these tests.

Factor XII Assay

Code

FX11

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Factor XIII Assay

Code

FA13

Sample Reqs

C (Frozen) [9] [18]

Special Instructions

[9] Clinical history must be provided.
[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.

Faecal Calprotectin/Elastase Profile

Profile details

Faecal Calprotectin

Faecal Elastase

Code

CEP

Sample Reqs

RF

Special Instructions

 

Faecal Elastase

Code

ELAS

Sample Reqs

RF

Special Instructions

Faecal Fat (1 Day Collection)

Code

TFFA

Sample Reqs

LF [6]

Special Instructions

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

Faecal Fat (3 day)

Code

FFAT

Sample Reqs

LF [6]

Special Instructions

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

Faecal Lactoferrin

Code

FLAC

Sample Reqs

RF

Special Instructions

Faecal Occult Blood/FOB (immunochemical/FIT) – NEW

Code

QFIT

Sample Reqs

QFIT

Special Instructions

Faecal Sugar Chromatography

Code

FCRO

Sample Reqs

RF (Frozen)

Special Instructions

Faecal Urobilinogen

Code

FURO

Sample Reqs

RF

Special Instructions

Familial Adenomatous Polyposis (FAP) – 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.

Familial Exudative Vitreoretinopathy (FEVR) NGS Panel – full sequencing NDP + FZD4 + LRP5 + TSPAN12 + ZNF408 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Familial Hypercholesterolaemia – LDLR + APOB + PCSK9 + LDLRAP1 screening

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Familial Hypocalciuric Hypercalcaemia (FHH) Panel – full sequencing CASR + AP2S1 + GNA11 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Familial Mediterranean Fever – hotspot sequencing MEFV gene

Code

GENE

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Familial Medullary Thyroid Carcinoma – hotspot sequencing RET gene

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.

Farmers Lung Precipitins

Code

FARM

Sample Reqs

B

Special Instructions

Fasciola Hepatica Antibodies (Liver Fluke)

Code

FASC

Sample Reqs

B

Special Instructions

FAST Chlamydia PCR Swab

Code

FSCT

Sample Reqs

PCR Swab

Special Instructions

Fast Chlamydia Urine

Code

FCT

Sample Reqs

FCRU

Special Instructions

FAST CT/GC PCR Swab

Code

FSCG

Sample Reqs

PCR Swab

Special Instructions

FAST CT/GC Rectal PCR Swab

Code

FRCG

Sample Reqs

PCR Swab

Special Instructions

FAST CT/GC Throat PCR Swab

Code

FTCG

Sample Reqs

PCR Swab

Special Instructions

Fast CT/GC Urine

Code

FCG

Sample Reqs

FCRU

Special Instructions

FAST Gonorrhoea PCR Swab

Code

FSGN

Sample Reqs

PCR Swab

Special Instructions

FAST Gonorrhoea Urine

Code

FGN

Sample Reqs

FCRU

Special Instructions

FAST Screen SHORT

Code

FSSC

Sample Reqs

B FCRU

Special Instructions

FAST Screen SHORT with Swab

Code

FSSS

Sample Reqs

B PCR

Special Instructions

FAST Screen with Swab

Code

FSWS

Sample Reqs

B PCR

Special Instructions

FAST Screen with Urine

Code

FUSC

Sample Reqs

B FCRU

Special Instructions

Fat Globules in Faeces

Code

FGLO

Sample Reqs

RF

Special Instructions

Fatty Acid Oxidation Deficiency NGS Panel – full sequencing across 22 genes

Code

GENE

Sample Reqs

A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Female Hormone Profile

Profile details

LH

FSH

Prolactin

Oestradiol (17-Beta)

Code

FIP

Sample Reqs

B 

Special Instructions

 

Ferritin

Code

FERR

Sample Reqs

B

Special Instructions

Fibrinogen

Code

FIB

Sample Reqs

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.

Fibrotest (Liver Fibrosis)

Code

FIBT

Sample Reqs

B

Special Instructions

Filaria (Lymphatic and Non-Lymphatic) Antibodies

Code

FIFA

Sample Reqs

B [9] [14]

Special Instructions

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

First Trimester Screening Bloods only (Risk to be calculated by requesting clinician)

Profile details

Free β-hCG

PAPP-A

Free β-hCG and PAPP-A in serum and sonographic determination of nuchal translucency (NT) are markers of choice to identify women at increased risk of Down Syndrome during the first trimester (week 11-13) of pregnancy.

Code

HCGF/PAPA

Sample Reqs

B 

Special Instructions

 

Fish Components

Code

ZZ10

Sample Reqs

B

Special Instructions

FK506 (Tacrolimus/Prograf)

Code

FK5

Sample Reqs

A [4]

Special Instructions

[4] Send to the laboratory without delay.

Flecainide (Tambocor)

Code

FLEC

Sample Reqs

A

Special Instructions

FLT3-ITD and FLT3-TKD screening assay

Code

FLT3

Sample Reqs

A

Special Instructions

Fluid Culture

Code

FLUD

Sample Reqs

SC

Special Instructions

Fluid Cytology

Code

CATF

Sample Reqs

Fluid [4]

Special Instructions

[4] Send to the laboratory without delay.

Fluid for Crystals

Code

FLU2

Sample Reqs

SC

Special Instructions

Fluoride (Urine)

Code

UFL

Sample Reqs

RU

Special Instructions

Fluoropyrimidine Toxicity screening – 5 common mutations

Code

GENE

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Fluoxetine (Prozac)

Code

PROZ

Sample Reqs

A [4]

Special Instructions

[4] Send to the laboratory without delay.

Folate (Red Cell)

Code

RBCF

Sample Reqs

A

Special Instructions

Folate (Serum)

Code

FOLA

Sample Reqs

B

Special Instructions

Fragile X Syndrome screen – FMR1 repeat analysis PCR (3 weeks) + Southern Blot (8 weeks) if required

Code

GENE

Sample Reqs

A
A
A
[9]

Special Instructions

[9] Clinical history must be provided.

Free Cortisol (Urine)

Code

UCOR

Sample Reqs

CU

Special Instructions

Free Fatty Acids

Code

FFA

Sample Reqs

B (Frozen) [1]

Special Instructions

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

Free T3

Code

FT3

Sample Reqs

B

Special Instructions

Free T4

Code

FT4

Sample Reqs

B

Special Instructions

Friedreich Ataxia – frataxin gene repeat analysis

Code

GENE

Sample Reqs

A
[9]

Special Instructions

[9] Clinical history must be provided.

Fructosamine

Code

FRUC

Sample Reqs

B

Special Instructions

Fructose – Plasma

Code

FRU

Sample Reqs

G (Frozen)[7]

Special Instructions

[7] Sample should be separated and frozen if sending overnight.

FSH

Code

FSH

Sample Reqs

B

Special Instructions

Full Blood Count

Code

FBC

Sample Reqs

A

Special Instructions

Fungal ID + Sens

Code

FUID

Sample Reqs

Fungal sample / STM

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