Basingstoke and north hampshire hospital pathology user handbook

TEST	SPECIMEN CONTAINER	VOLUME NEEDED	SAMPLE TYPE	REFERENCE RANGES	UNITS	SPECIAL PRECAUTIONS	KEY FACTORS	REFERRAL LABORATORY (INC ADDRESS)
TURN – AROUND (working days)
FT3	Gold Top Vacuette	4mL	Serum	3.5 - 6.5	pmol/L		Levels may be reduced in non-thyroidal illness		24 HOURS
FT4	Gold Top Vacuette	4mL	Serum	10 - 19	pmol/L		Levels may be reduced in non-thyroidal illness		24 HOURS
GAD antibodies	Gold Top Vacuette	4mL	Serum	<1	u/mL	Lab Note: SAS -20°C GAD		Sheffield Protein Department of Immunology Protein Reference Unit PO Box 894 Sheffield S5 7YT 01142 715552	14 DAYS
Galactitol	Plain (white top) Universal	10mL	Urine			Lab Note: Univ 4ºC		Newborn Screening & Biochemical Genetics Southmead Hospital Westbury-on-Trym Bristol BS10 5NB 0117 3235556	21 DAYS
Galactosaemia - enzyme studies	Green Top Vacuette	4mL	Lithium Heparin – Whole blood			Lab Note: SAS 4°C	Results may be affected by recent blood transfusions	Newborn Screening & Biochemical Genetics Southmead Hospital Westbury-on-Trym Bristol BS10 5NB 0117 3235556	5 WEEKS
Galactosaemia - enzyme studies	Blood Spot card		Blood spot			Lab Note: SAS Desk		Newborn Screening & Biochemical Genetics Southmead Hospital Westbury-on-Trym Bristol BS10 5NB 0117 3235556	10 DAYS
Galactose 1 phosphate	Green Top Vacuette	4mL	Lithium Heparin – Whole Blood			Lab Note : SAS 4ºC		Newborn Screening & Biochemical Genetics Southmead Hospital Westbury-on-Trym Bristol BS10 5NB 0117 3235556	5 WEEKS

TEST	SPECIMEN CONTAINER	VOLUME NEEDED	SAMPLE TYPE	REFERENCE RANGES	UNITS	SPECIAL PRECAUTIONS	KEY FACTORS	REFERRAL LABORATORY (INC ADDRESS)	TURN – AROUND (working days)
Gammaglutamyl transpeptidase	see GGT								4 HOURS
Ganglioside antibodies	Gold Top Vacuette	4mL	Serum			Lab Note: SAS -20°C GANG		Neuroimmunology Room 917 Institute of Neurology Queen Square London WC1N 3BG 02078 373611 extn 3814	4 WEEKS
Gastric parietal cell Abs	Gold Top Vacuette	4mL	Serum	_	_	Lab Note: SAS 4°C GPCA		Southampton Immunology Mailpoint 8 Level C Southampton General Hospital Tremona Road Southampton SO16 6YD 02380 796615	10 DAYS
Gastrin	see Gut Hormones
GAWK	see Gut Hormones
GBM antibodies	Gold Top Vacuette	4mL	Serum	0 – 7.0		Lab Note: SAS 4°C GBM		Southampton Immunology Mailpoint 8 Level C Southampton General Hospital Tremona Road Southampton SO16 6YD 02380 796615	10 DAYS
Gentamycin	Gold Top Vacuette	4mL	Serum		mg/L				24 HOURS
GGT	Gold Top Vacuette	4mL	Serum	M 0 - 60 F 0 - 40	IU/L		May be affected by invitro haemolyis		4 HOURS
GH	see Growth hormone
Gliadin antibodies	see Coeliac screen					Lab Note: SAS 4°C COEL

TEST	SPECIMEN CONTAINER	VOLUME NEEDED	SAMPLE TYPE	REFERENCE RANGES	UNITS	SPECIAL PRECAUTIONS	KEY FACTORS	REFERRAL LABORATORY (INC ADDRESS)	TURN – AROUND (working days)
Globulin	Gold Top Vacuette	4mL	Serum	23 - 40	g/L				4 HOURS
Glomerular basement membrane Abs			see GBM
Glucagon			see Gut Hormones
Glucose - CSF	Grey top Vacuette	0.5mL	CSF	60% Plasma level	mmol/L				4 HOURS
Glucose - fluid	Grey Top Vacuette		Fluid						4 HOURS
Glucose - plasma	Grey Top Vacuette	4mL	Fluoride oxalate plasma	3.8 - 6.0	mmol/L		Patient should be fasting		4 HOURS
OGTT (Oral Glucose Tolerance Test) post 75g load Impaired fasting glycaemia Impaired glucose tolerance Diabetic Post 50g load in pregnancy	Grey Top Vacuette	4mL	Fluoride oxalate plasma	Fasting: <6.0 2h post: <7.8 Fasting: 6.1-6.9 2h post: <7.8 Fasting: <7.0 2h post:7.8-11.1 Fasting: >7.0 and/or 2h post: >11.1 Fasting: <6.0 2h post: <7.8	mmol/L				24 HOURS

TEST	SPECIMEN CONTAINER	VOLUME NEEDED	SAMPLE TYPE	REFERENCE RANGES	UNITS	SPECIAL PRECAUTIONS	KEY FACTORS	REFERRAL LABORATORY (INC ADDRESS)	TURN – AROUND (working days)
Glucose - serum (BNHFT)	Gold Top Vacuette	4mL	Serum	3.8 - 6.0	mmol/L	Sample MUST be in lab within 2 hours	Patient should be fasting		4 HOURS
Glycated haemoglobin	see HbA1								24 HOURS
Glycosamino glycans	see Mucopoly- saccharides
Growth hormone	Gold Top Vacuette	4mL	Serum	< 5	mu/L	TO LAB AT ONCE - SAMPLE MUST BE FROZEN IN 1 HOUR Lab Note: SAS -20°C	levels may be increased by stress or exercise	Specialist Biochemistry Mail Point 8 Level C South Block Southampton General Hospital Tremona Road Southampton SO16 6YD 02380 798717	14 DAYS
GTT (Glucose Tolerance Test)	Two Grey Top Vacuettes	2 x 4mL Timed	Fluoride Oxalate	see glucose		Two samples: Fasting and 2h post oral glucose - contact lab to make an appointment			24 HOURS
Gut Hormones	Large Pink Top Vacuette	6 mL	EDTA Plasma		pmol/L