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Introduction Platelet antibody 
detection 
Speaker :張志昇 
Date: 2014/08/24
PTR NAITP HIT DIT TTP ITP TRALI 
Test or 
investig 
ation 
CCI CBC, DC CBC,DC 
Heparin history 
Drug history DAT 
BUN 
CBC,DC 
DAT BNP 
CBC 
X-ray 
Serologi 
cal test 
PRA(class I) 
ELISA(Pakplus) 
SPRCA (capture- 
P, MASPAT):anti-platelet 
antibody 
screening, and 
cross matching 
PIFA 
Luminex PRA 
class I 
MAIPA 
MPHA 
Mother and fetus 
PRA(class I/II) 
ELISA(Pakplus) 
SPRCA (capture-P, 
MASPAT):anti-platelet 
antibody 
screening 
PIFA 
Luminex PRA 
MAIPA 
MPHA 
Mother serum Vs. 
Father/baby plat. 
SPRCA, PIFA 
cross matching 
ELISA (PF4) 
CAT (PF4) 
R/O SPRCA 
ELISA ( Pakplus) 
T (PF4) 
Serum + drug, or 
eluent 
SPRCA 
( Capture-P, 
MASPAT) 
SPRCA ( AC) 
FRET:ADMATS 
-13 
R/O SPRCA 
ELISA 
(Pakplus) 
activity 
ELISA 
(Pakauto) 
ELISA 
(Pakplus) 
SPRCA 
( Capture-P, 
MASPAT ): 
auto antibody 
and allo 
antibody 
PIFA (auto) 
Flow cytometry 
( auto) 
Donor serum 
( and/or patient 
) 
Luminux PRA 
( class I/class 
II/HNA) 
ELISA PRA 
(class I/II) 
flowPRA (class 
I/II) 
Leuko-agglutinin 
test 
MAIGA 
GIFA 
Antigen HLA class I 
typing 
HPA typing 
CD36 typing 
Parent and fetus: 
HLA class I/II 
typing, 
HPA typing 
CD 36 typing
臨床上檢測血小板特異性抗體的方法 
Solid- phase red cell adherence assay (SPRCA) 
Capture-P 
MASPAT 
MACE (Modified antigen capture ELISA ) 
MAIPA 
PIFT
Solid- phase red cell adherence assay 
(SPRCA) 
This assay can detect HLA, ABO, 
and platelet specific IgG 
antibodies. But weak reactions 
give immediate results.
Application of SPRCA 
 Cross match (e.g. NAITP mother’s serum 
+father’s platelet) 
 +Chloroquine: differential of HLA/HPA 
 +drug : drug-induced thrombocytopenia 
 +auto cell: auto antibodies
PRP preparation (ITP) 
檢體收集: 將含抗凝劑EDTA的全血在 
400 RCF下室溫離心10分鐘, 收集上層 
血漿部分。 
病人 platelet count 檢體量 
< 10 K 40 mL 
11~20K 40mL 
21~50K 30mL 
51~150K 20mL 
> 150K 10mL 
• 若懷疑病人有自體抗 
體,則病人須於最近 
一週內未輸過血小板 
濃厚液才可以抽血送 
檢。 
• 若病人於最近三週內 
注射過IVIG,則不 
適合此檢驗。
1. Modified antigen capture ELISA (MACE) 
-- MACE-1 and MACE-2 
2. Platelet auto antibody test 
ELISA Screening Test for Autoantibodies to Platelet Glycoproteins IIb/IIIa, Ib/IX 
and Ia/IIa 
-- PAKAUTO 
3. Platelet antibody of GpIIb/ IIIa identification 
ELISA Test for the Detection of Antibodies Specific to epitopes on the Platelet 
Glycoprotein IIb/IIIa 
--- PAK 1 
4. Platelet antibody 
ELISA Screening Test for the Detection of HLA Class I, Platelet and weaker 
antibodies 
--- PAKPLUS
HPA antibodies screening 
material 
標 
示 
內容物體積說明 
HPA、HLA class I ELISA 
strip 
1 set 2x8 一條 
Plate Sealers 4 PC 
WB Wash buffer 1 btl 
SD Specimen Diluent 2 mL 稀釋檢體用 
AH Anti-Human IgG/A/M 
Conjugate 
10 μL 使用前以SD稀釋 
PN PNPP Substrate 1 btl 避光玻璃瓶 
H2O dd Water 1 mL 
SB Substrate Buffer 2 mL 稀釋基質液用 
ST Stop Solution 2 mL 
擦手紙一 包
Procedure of Pakplus 
1. 在所有well中加入300 μL WB 置於室溫5~10分鐘 
2. 稀釋檢體,100 μL血清加入300 μL SD 
3. 將反應盤中的清洗液倒掉,在吸水紙巾上拍乾 
4. 加入50 μL稀釋好的檢體到A~G wells;請勿加入H 
(blank) 
5. 貼好封膜,放入37℃乾式培養箱,反應40分鐘 
6. 配製二級抗體,10 μL AH 加入1 mL SD 低速 
vortex避光備用 
7. 反應40分鐘後,倒掉盤內液體,在吸水紙巾上拍乾 
8. 清洗:每個well加入300 μL WB 、倒掉盤內液體 
9. 重複清洗三次後,在吸水紙巾上徹底拍乾 
10.A~G中加入50 μL稀釋好的二級抗體
Procedure of Pakplus (II) 
1. 輕敲PNPP的玻璃瓶,減少粉末附著在瓶蓋;小心的打開。 
2. 加入0.5 mL dd water,蓋回瓶蓋,搖動混和均勻 
3. 取20 μL完全溶解的PNPP,加入2 mL的 SB 中,混和均勻 
避光備用 
4. 反應40分鐘後,倒掉盤內液體,在吸水紙巾上拍乾 
5. 清洗:每個well加入300 μL WB 、倒掉盤內液體 
6. 重複清洗三次後,在吸水紙巾上拍乾。 
7. 設定計時器倒數30分鐘,立即進行以下步驟 
8. A~G中加入100 μL稀釋好的PNPP,勿加入H(blank)中 
9. 貼好封膜,避光室溫反應30分鐘 
(以PNPP加入第一個well起算) 
10. 計時結束後在A~G中加入100 μL ST ,H中加入200 μL
Result and interpretation 
判讀:減去blank吸光度,2X於相對列 
mean of negative control 則可判定為 
positive,介於1X~2X為bordline. 
但positive需至少8X的mean of 
negative control吸光度,否則實驗 
Invalid。
GTI-PAKPLUS 
ELISA Screening Test for the Detection of HLA 
Class I, Platelet and weaker antibodies 
Neg. control 
Neg. control P’t sample 1 Neg. control P’t sample 2 P’t sample 3
Thanks For Your Attention

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Hpa antibody

  • 1. Introduction Platelet antibody detection Speaker :張志昇 Date: 2014/08/24
  • 2. PTR NAITP HIT DIT TTP ITP TRALI Test or investig ation CCI CBC, DC CBC,DC Heparin history Drug history DAT BUN CBC,DC DAT BNP CBC X-ray Serologi cal test PRA(class I) ELISA(Pakplus) SPRCA (capture- P, MASPAT):anti-platelet antibody screening, and cross matching PIFA Luminex PRA class I MAIPA MPHA Mother and fetus PRA(class I/II) ELISA(Pakplus) SPRCA (capture-P, MASPAT):anti-platelet antibody screening PIFA Luminex PRA MAIPA MPHA Mother serum Vs. Father/baby plat. SPRCA, PIFA cross matching ELISA (PF4) CAT (PF4) R/O SPRCA ELISA ( Pakplus) T (PF4) Serum + drug, or eluent SPRCA ( Capture-P, MASPAT) SPRCA ( AC) FRET:ADMATS -13 R/O SPRCA ELISA (Pakplus) activity ELISA (Pakauto) ELISA (Pakplus) SPRCA ( Capture-P, MASPAT ): auto antibody and allo antibody PIFA (auto) Flow cytometry ( auto) Donor serum ( and/or patient ) Luminux PRA ( class I/class II/HNA) ELISA PRA (class I/II) flowPRA (class I/II) Leuko-agglutinin test MAIGA GIFA Antigen HLA class I typing HPA typing CD36 typing Parent and fetus: HLA class I/II typing, HPA typing CD 36 typing
  • 3. 臨床上檢測血小板特異性抗體的方法 Solid- phase red cell adherence assay (SPRCA) Capture-P MASPAT MACE (Modified antigen capture ELISA ) MAIPA PIFT
  • 4. Solid- phase red cell adherence assay (SPRCA) This assay can detect HLA, ABO, and platelet specific IgG antibodies. But weak reactions give immediate results.
  • 5. Application of SPRCA  Cross match (e.g. NAITP mother’s serum +father’s platelet)  +Chloroquine: differential of HLA/HPA  +drug : drug-induced thrombocytopenia  +auto cell: auto antibodies
  • 6. PRP preparation (ITP) 檢體收集: 將含抗凝劑EDTA的全血在 400 RCF下室溫離心10分鐘, 收集上層 血漿部分。 病人 platelet count 檢體量 < 10 K 40 mL 11~20K 40mL 21~50K 30mL 51~150K 20mL > 150K 10mL • 若懷疑病人有自體抗 體,則病人須於最近 一週內未輸過血小板 濃厚液才可以抽血送 檢。 • 若病人於最近三週內 注射過IVIG,則不 適合此檢驗。
  • 7. 1. Modified antigen capture ELISA (MACE) -- MACE-1 and MACE-2 2. Platelet auto antibody test ELISA Screening Test for Autoantibodies to Platelet Glycoproteins IIb/IIIa, Ib/IX and Ia/IIa -- PAKAUTO 3. Platelet antibody of GpIIb/ IIIa identification ELISA Test for the Detection of Antibodies Specific to epitopes on the Platelet Glycoprotein IIb/IIIa --- PAK 1 4. Platelet antibody ELISA Screening Test for the Detection of HLA Class I, Platelet and weaker antibodies --- PAKPLUS
  • 8. HPA antibodies screening material 標 示 內容物體積說明 HPA、HLA class I ELISA strip 1 set 2x8 一條 Plate Sealers 4 PC WB Wash buffer 1 btl SD Specimen Diluent 2 mL 稀釋檢體用 AH Anti-Human IgG/A/M Conjugate 10 μL 使用前以SD稀釋 PN PNPP Substrate 1 btl 避光玻璃瓶 H2O dd Water 1 mL SB Substrate Buffer 2 mL 稀釋基質液用 ST Stop Solution 2 mL 擦手紙一 包
  • 9. Procedure of Pakplus 1. 在所有well中加入300 μL WB 置於室溫5~10分鐘 2. 稀釋檢體,100 μL血清加入300 μL SD 3. 將反應盤中的清洗液倒掉,在吸水紙巾上拍乾 4. 加入50 μL稀釋好的檢體到A~G wells;請勿加入H (blank) 5. 貼好封膜,放入37℃乾式培養箱,反應40分鐘 6. 配製二級抗體,10 μL AH 加入1 mL SD 低速 vortex避光備用 7. 反應40分鐘後,倒掉盤內液體,在吸水紙巾上拍乾 8. 清洗:每個well加入300 μL WB 、倒掉盤內液體 9. 重複清洗三次後,在吸水紙巾上徹底拍乾 10.A~G中加入50 μL稀釋好的二級抗體
  • 10. Procedure of Pakplus (II) 1. 輕敲PNPP的玻璃瓶,減少粉末附著在瓶蓋;小心的打開。 2. 加入0.5 mL dd water,蓋回瓶蓋,搖動混和均勻 3. 取20 μL完全溶解的PNPP,加入2 mL的 SB 中,混和均勻 避光備用 4. 反應40分鐘後,倒掉盤內液體,在吸水紙巾上拍乾 5. 清洗:每個well加入300 μL WB 、倒掉盤內液體 6. 重複清洗三次後,在吸水紙巾上拍乾。 7. 設定計時器倒數30分鐘,立即進行以下步驟 8. A~G中加入100 μL稀釋好的PNPP,勿加入H(blank)中 9. 貼好封膜,避光室溫反應30分鐘 (以PNPP加入第一個well起算) 10. 計時結束後在A~G中加入100 μL ST ,H中加入200 μL
  • 11.
  • 12. Result and interpretation 判讀:減去blank吸光度,2X於相對列 mean of negative control 則可判定為 positive,介於1X~2X為bordline. 但positive需至少8X的mean of negative control吸光度,否則實驗 Invalid。
  • 13. GTI-PAKPLUS ELISA Screening Test for the Detection of HLA Class I, Platelet and weaker antibodies Neg. control Neg. control P’t sample 1 Neg. control P’t sample 2 P’t sample 3
  • 14. Thanks For Your Attention