New IBL Cortisol Saliva ELISA

Last updated: 01st April, 2020

The new IBL International Cortisol Saliva ELISA, catalog no. RE52611, is now calibrated to the LC-MS/MS reference method and can be ordered immediately.

This new assay is characterized by the following features:

  • Calibration to the LC-MS/MS reference method
  • As few as 6 standards now required (previously 7 standards)
  • The testing procedure remains the same
  • The TMB, stop solution and wash solution will soon be uniform across the salivary product line items

The new reference ranges have been carefully determined on the basis of 100 day profiles. Starting with batch no. ECO137, the following reference values have to be considered:

Time after awakening (h)

Cortisol (saliva) Range – RE52611

(♂/♀; > 6y; n= 100; 5%-95% percentile)

Median 

Range (µ/dL)

Median

Range (nmol/L)

(µ/dL) 

5% 

95%

(nmol/L)

5%

95%

Awakening

0.343

0.113

0.803

9.47

3.12 

22.17

0.5

0.478

0.200

1.076

13.19

5.52

29.70

1

0.384

0.101

0.936

10.60

2.79

25.82

2

0.234

0.083

0.574

6.44

2.29

15.85

5

0.150

0.074

0.355

4.14

2.04

9.79

8

0.116

0.055

0.314

3.20

1.53

8.67

12

0.082

0.032

0.322

2.26

0.87

8.89

The improved kit (starting with batch EC0137) is already available and replaces the current version.

 

Find out more about IBL Cortisol Saliva ELISA

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