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Items starting with R

RAS (KRAS/NRAS)

  • Turnaround Time: 7-10 days
Renin

Renin

Reference Range

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://academic.oup.com/jcem/article/93/9/3266/2596343)

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.

 

 

  • Turnaround Time: 14 Days
Reticulocyte Count

Reticulocyte Count

Reference Range

Male and Female: 20 – 80 x109/L

  • Turnaround Time: 24 hours, if urgent by prior arrangement with laboratory
Rheumatoid Factor (RF)

Rheumatoid Factor (RF)

Reference Range

<14 IU/mL

  • Turnaround Time: 1 day
Respiratory syncytial virus  (RSV)

Respiratory syncytial virus (RSV)

  • Turnaround Time: Within 24 hours
Rubella IgM

Rubella IgM

  • Turnaround Time: 7-28 Days
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