von Willebrand Multimeric Panel : ARUP Lab Tests

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von Willebrand Multimeric Panel : 0030002

Mnemonic: VW MUL PAN

Methodology:	Electrophoresis/Western Blot/Clotting/Microlatex Particle-Mediated Immunoassay/Platelet Agglutination
Performed:	Mon-Sat
Reported:	1-3 days
Specimen Required:	Collect: Two 5 mL lt. blue (sodium citrate). Refer to the Hemostasis/Thrombosis section in the front of this User's Guide for specimen collection instructions. Transport: 4 mL platelet-poor plasma, frozen. (Min: 2 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 2 mL platelet-poor plasma, frozen. Remarks: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Unacceptable Conditions: Serum. Nonfrozen or hemolyzed samples. Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks

Reference Interval:

Test Number	Components	Reference Interval
	von Willebrand Multimeric	Normal
0030095	Factor VIII, Activity	0-6 years: 56-191% 7-9 years: 76-199% 10-11 years: 80-209% 12-13 years: 72-198% 14-15 years: 69-237% 16-17 years: 63-221% 18 years and older: 56-191%
0030285	von Willebrand Factor Antigen	0-6 years: 52-214% 7-9 years: 62-180% 10-11 years: 63-189% 12-13 years: 60-189% 14-15 years: 57-199% 16-17 years: 50-205% 18 years and older: 52-214%
0030250	von Willebrand Factor Activity (Ristocetin Cofactor)	0-6 years: 51-215% 7-9 years: 52-176% 10-11 years: 60-195% 12-13 years: 50-184% 14-15 years: 50-203 % 16-17 years: 49-204% 18 years and older: 51-215%

CPT Code(s):

85247 VW Mul; 85240 F8; 85246 VWF/AG; 85245 RCF

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