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Table 5 Corresponding PNU concentrations for a weight per volume of 1:100 and 1:200 for HollisterStier and Stallergenes Greer extracts

From: Comparison of weight per volume and protein nitrogen units in non-standardized allergen extracts: implications for prescribing subcutaneous immunotherapy

RAGWEED

Corresponding PNU/mL

HollisterStier (n = 16)

Stallergenes Greer (n = 5)

Wt/volume (1:100)

Wt/volume (1:200)

Wt/volume (1:100)

Wt/volume (1:200)

Mean

17,443.75

8721.88

16,360.00

8180.00

St. Deviation

2593.98

1296.99

1209.30

604.65

ALT

HollisterStier (n = 27)

Stallergenes Greer (n = 5)

Wt/volume (1:100)

Wt/volume (1:200)

Wt/volume (1:100)

Wt/volume (1:200)

Mean

1974.07

987.04

13,480.00

6740.00

St. Deviation

662.68

331.34

1562.56

781.28

DOG

HollisterStier (n = 12)

Stallergenes Greer (n = 5)

Wt/volume (1:100)

Wt/volume (1:200)

Wt/volume (1:100)

Wt/volume (1:200)

Mean

208.33

104.17

3260.00

1630.00

St. Deviation

73.12

36.56

449.89

224.94

BIRCH

HollisterStier (n = 13)

Stallergenes Greer (n = 5)

Wt/volume (1:100)

Wt/volume (1:200)

Wt/volume (1:100)

Wt/volume (1:200)

Mean

3569.23

1784.62

5100.00

2550.00

St. Deviation

519.44

259.72

477.49

238.75

  1. *ALT stands for Alternaria