Skip to main content

Table 4 Alternaria extract data from HollisterStier and Stallergenes Greer

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

ALT

Corresponding PNU/mL

HollisterStier (n = 27)

Stallergenes Greer (n = 5)

Wt/volume (1:100)

Wt/volume (1:200)

Wt/volume (1:100)

Wt/volume (1:200)

A

 Lowest value

900.00

450.00

11,400.00

5700.00

 Highest value

4100.00

2050.00

15,800.00

7900.00

 Mean

1974.07

987.04

13,480.00

6740.00

 St. deviation

662.68

331.34

1562.56

781.28

ALT

Corresponding Diluent (mL)

HollisterStier (n = 27)

Stallergenes Greer (n = 5)

PNU (1000)

PNU (2000)

PNU (3000)

PNU (4000)

PNU (5000)

PNU (1000)

PNU (2000)

PNU (3000)

PNU (4000)

PNU (5000)

B

 Lowest value

90.00

45.00

30.00

22.50

18.00

1140.00

570.00

380.00

285.00

228.00

 Highest value

410.00

205.00

136.67

102.50

82.00

1580.00

790.00

526.67

395.00

316.00

 Mean

197.41

98.70

65.80

49.35

39.48

1348.00

674.00

449.33

337.00

269.60

 St. deviation

66.27

33.13

22.09

16.57

13.25

156.26

78.13

52.09

39.06

31.25

  1. *ALT stands for Alternaria
  2. Corresponding PNU concentrations for a weight per volume of 1:100 and 1:200 are shown A, while corresponding diluent volumes for PNUs values from 1000 to 5000 are shown in B. These volumes represent the amount of diluent or buffer added to 1 g of allergen