Referred Work

Provided by reference Lab

P3NP references ranges in use from 1st April 2014

 Paediatric reference ranges

MALE:

FEMALE:

Adult reference ranges:

Green (safe)                      <10.4 µg/L

Amber (warning)             10.4 – 12.9 µg/L

Red (action)                       >12.9 µg/L

 Adult patients on methotrexate:

3.3 – 9.6 µg/L

Reference lab will provide information.

From 1/3/18 renin samples are analysed using the IDS iSYS direct renin mass immunoassay which will use the following reference ranges:

Ambulatory:  Female: 6.1 – 62.7 mIU/L,  Male: 9.0 – 103 mIU/L

Supine: 4.2 – 59.7 mIU/L

Screen positive for Conns: Aldosterone/renin ratio >91pmol/mU + aldosterone >750 pmol/L

(Endocrine guidelines on the investigation of Conns https://doi.org/10.1210/jc.2015-4061)

The Aldosterone/Renin ratio cut-off that we are providing is a guide only and not a diagnostic test and the ratio should be interpreted, cautiously, in conjunction with relevant clinical information and medications that may affect the ratio.

Early morning range (7-9 a.m.): 3.2-22.8 nmol/L

Late night range (11 p.m. to 12 a.m.): <3.2 nmol/L

Provided by reference laboratory

Provided by referral laboratory

Please note from 13 Feb 2017 new reference ranges and tests reported for TMA profile. TMA/TMA-n-oxide result has been replaced by % N-oxidation.  Dimethylamine is no longer routinely analysed as part of the TMA profile - if it is required it should be requested separately.

PLEASE NOTE FROM JANUARY 2018 TOTAL TMA/CREATININE RATIO WILL NO LONGER BE REPORTED.  The parameter is not directly required for diagnosis and is an assessment of the amount of dietary choline going through the pathway, which aids in the interpretation of results.  The parameter will still be measured but not reported, rather a comment will be added if the value is low indicating insufficient stressing of the pathway which could lead to a false negative.  

<0.5 umol/L

Normal values <2 nmol/mmol creatinine