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Laboratory Test Reference Guide

Laboratory Information

Test Name

Factor 8 (VIII) assay - chromogenic


FVIII chromogenic
VIII chromo
chromogenic FVIII

External Price (excl. GST)


Specimen Collection

Adult Specimen

2.7ml sodium citrate (light blue)

Paediatric Specimen

1.8ml sodium citrate (light blue)

Sample Delivery to Lab

Sample must be received within 4 hours of collection

Instructions for Referral to Waikato Lab

Aliquot instructions

For samples within Waikato Hospital, samples must be received in the laboratory within 2 hours of collection and kept at room temperature (NOT on ice or heat).

Aliquot Transport

 If despatched from outside Waikato Hospital, plasma must be double spun and frozen within 4 hours of collection.

Test Information



Test Availability

By arrangement with Laboratory

Laboratory Turnaround Time

Batched weekly, 3 hours if urgent


Chromogenic functional assay of Factor VIII

Unit of measurement


Reference interval

50-200 %

Minimum Volume

1.0ml double spun citrated plasma

Electronic Information

Registration Code