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. 2021 Jul 31;127(4):498–499. doi: 10.1016/j.anai.2021.07.020

Table 1.

Skin Testing Results

Stepsa PEG 3350 Control Polysorbate 20 Polysorbate 80 mRNA COVID-19 vaccine
MiraLAX (170 mg/mL) Methylprednisolone acetate (40 mg/mL) Methylprednisolone sodium (40 mg/mL) Polysorbate 20 (0.5 mg/mL) Triamcinolone acetonide (40 mg/mL) Refresh eye drops Prevnar 13 vaccine Pfizer-BioNTech (lot number ER8731)
Step 1 1:100 SP (0) 1:1 SP (0) 1:1 SP (0) 1:1 SP (0) 1:1 SP (0) 1:1 SP (0) 1:10 SP (0) 1:1 SP (0)
Step 2 1:10 SP (0) 1:100 ID (0) 1:100 ID (0) 1:100 ID (0) 1:10 ID (3 × 3 wheal, 7 × 7 flare) 1:100 ID (0)
Step 3 1:1 SP (0) 1:10 ID (0) 1:10 ID (0) 1:10 ID (0 wheal, 4 × 4 flare)
Step 4 1:1 ID (3 × 3 wheal, 8 × 8 flare)

Abbreviations: COVID-19, coronavirus disease 2019; ID, intradermal; PEG, polyethylene glycol; mRNA, messenger RNA; SP, skin prick.

a

Controls done before testing include control prick (0), histamine 6 mg/mL SP (3 × 3 flare).