The "ascorbate" effect on 2,3-DPG is known to be due to oxalate.
Beutler
E
E
D019794:2,3-Diphosphoglycerate / Q000097:blood*; D000225:Adenine / Q000737:chemistry / Q000494:pharmacology; D016477:Artifacts; D001205:Ascorbic Acid / Q000302:isolation & purification / Q000494:pharmacology*; D001793:Blood Preservation; D002951:Citrates / Q000737:chemistry / Q000494:pharmacology; D004340:Drug Contamination; D004791:Enzyme Inhibitors / Q000302:isolation & purification / Q000494:pharmacology*; D004912:Erythrocytes / Q000737:chemistry / Q000187:drug effects*; D005947:Glucose / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008353:Mannitol / Q000737:chemistry / Q000494:pharmacology; D009525:Niacin / Q000494:pharmacology; D019815:Oxalic Acid / Q000302:isolation & purification / Q000494:pharmacology*; D010710:Phosphates / Q000737:chemistry / Q000494:pharmacology; D011770:Pyruvate Kinase / Q000037:antagonists & inhibitors / Q000097:blood; D012965:Sodium Chloride / Q000737:chemistry / Q000494:pharmacology; D012996:Solutions / Q000494:pharmacology*
C037839:ADSOL; C034876:CPDA solutions; D002951:Citrates; D004791:Enzyme Inhibitors; D010710:Phosphates; D012996:Solutions; D019794:2,3-Diphosphoglycerate; D009525:Niacin; D008353:Mannitol; D012965:Sodium Chloride; D019815:Oxalic Acid; D011770:Pyruvate Kinase; D005947:Glucose; D000225:Adenine; D001205:Ascorbic Acid