LIVER FUNCTION TESTS
Department: Biochemistry
Alternate Names for Test: LFT
Constituent Tests: ALT, Alk Phos, Total Protein, Albumin, Bilirubin
Specimen Collection Requirements:
Sample Type:

1x Yellow SST (Serum Separator) tube 8.5mL

Sample Type Notes: GGT and AST are not included in routine hospital LFT
AST is not included in routine community requested LFT
Paediatric samples: 0.6mL of blood in green or yellow microtainer 
Additional Information: Please note:  If LFTs are added after the day of collection, bilirubin results may 
be lower than those reported, due to specimen age at time of analysis.
In the Lab:
Delphic Code: LFT
Ultra Code: LFT (incl GGT) or LFH (no GGT)
Lab Solutions Code: LFT1
Testing Schedule: Analysed daily
Turnaround Time: Daily
Reference Interval & Interpretation: GGT:
0-6 months            5-150 U/L
>6 months - 1 year    5-50 U/L
>1 year - 12 years    5-30 U/L
>12 years - Adult (females) 10-35 U/L                             
>12 years - Adult (males)   10-50 U/L

ALT:
Female 5-30 U/L
Male   5-40 U/L

ALK PHOS:
0 - 1 years (unisex)    60-500 U/L
>1 - 11 years (unisex)  80-360 U/L
>11 - 16 years (female) 80-400 U/L
>16 - 18 years (female) 50-200 U/L
>18 -50 years (female)  20-90 U/L
>50 -65 years (female)  20-110 U/L
>11 - 16 years (male)   90 - 450 U/L 
>16 - 18 years (male)   60 - 300 IU/L 
>18 - 65 years (male)   20 - 110 IU/L 
>65 years (unisex)      30 - 150 IU/L

TOTAL PROTEIN:
0-2 months          45-70 g/L
>2 months - 1 year  50-80 g/L
>1 year - 6 years   55-80 g/L
>6 years - 11 years 60-83 g/L
>11 years - Adult   65-80 g/L

ALBUMIN:
0-1 year         30-45 g/L
>1 year - Adult  34-48 g/L

BILIRUBIN:
0 days    2-49  umol/L
1 day     2-99  umol/L
2 days    2-139 umol/L
3 days    2-199 umol/L
4 days-14 days  2-169 umol/L 
15 days-6 weeks 2-23 umol/L
6 weeks-Adult   2-20 umol/L
Stability Time Limit for Add-On Tests: 5 days (Bilirubin may be lower than reported)
Interfering Substances: A confirmatory/reflex protein electrophoresis test may be generated. Additional charges may incur.
Link to Application and Diagnostic Use Website: https://www.rcpa.edu.au/Manuals/RCPA-Manual/Pathology-Tests
Contact Details:
Lab Contact: Max Reed
Department Name: Biochemistry
Phone: (04) 381 5900
Email: Max.Reed@wellingtonscl.co.nz

Test Information last updated on 30/05/2017
Website last updated on 30/03/2020 08:03

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