Everything you need to prepare and submit your sample.
Access HumanBiomics collection instructions, specimen preparation protocols, Chain of Custody forms and laboratory submission resources.
Prepare your specimen correctly before laboratory submission.
Laboratory forms and collection guidance
Download the appropriate instructions or forms before collecting and shipping a HumanBiomics specimen.
Plasma & Serum Collection Instructions
Review tube requirements, specimen preparation, storage, transportation and sample stability information.
View Collection Instructions → Laboratory ProtocolTGF-β1 Double-Spin Protocol
Detailed platelet-poor plasma preparation guidance designed to improve consistency in TGF-β1 measurement.
View TGF-β1 Protocol → Blood SamplesHuman Blood Sample Instructions
General guidance for blood collection, labeling, specimen preparation, storage and laboratory shipment.
View Blood Instructions → Required DocumentationChain of Custody Form
Complete patient, provider, specimen and requested testing information before submitting samples to the laboratory.
Download Chain of Custody →Know your specimen requirements before collection
Plasma and serum tests have specific tube, volume, processing, storage and shipping requirements. Following the correct procedure helps reduce delays and specimen rejection.
Several HumanBiomics tests require plasma specimens, including TGF-β1, VEGF-A, C4a and other selected biomarkers.
MMP-9, Leptin and Osmolality are among the tests commonly submitted using serum specimens.
Confirm the required specimen volume and collection tube before preparing your sample for laboratory submission.
Store and ship specimens according to the selected test requirements.
- Confirm the required specimen type before collection.
- Use the appropriate collection tube.
- Clearly label all submitted tubes.
- Follow required refrigeration or freezing instructions.
- Include the completed Chain of Custody form.
Double-spin preparation for more consistent TGF-β1 measurement
TGF-β1 measurement is particularly sensitive to platelet contamination. HumanBiomics provides a double-centrifugation protocol for preparing platelet-poor plasma before testing.
Residual platelets can release stored TGF-β1 and may contribute to artificially elevated measurements. Proper platelet-poor plasma preparation helps improve consistency.
Complete the Chain of Custody form
HumanBiomics uses the Chain of Custody form to capture required patient, provider, specimen and testing information associated with the submitted laboratory sample.
HumanBiomics Chain of Custody
Download and complete the form before sending specimens to the laboratory.
Download Form →Have questions about specimen preparation or submission?
Contact HumanBiomics for general assistance with available laboratory tests, specimen requirements and sample submission.