100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary Testing Urine Samples £7.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. OCR
  4.  
  5. Biology A
  6.  
  7. Unit 5

Summary

Summary Testing Urine Samples
 8 views  0 purchase
  • Institution
  • OCR

Revision notes on testing urine samples. A level biology OCR A revision notes. Notes on module 5: Communication, homeostasis and energy. Summary/ information you need to memorize for a level biology OCR A exams.

Preview 1 out of 1  pages

Document information

  • December 4, 2023
  • 1
  • 2022/2023
  • Summary

Subjects

Written for

All documents for this subject (112)

Seller

avatar-seller
flcarr23

Content preview

Testing Urine Samples:
Testing Urine – Pregnancy Tests:
 When the embryo implants on the uterine lining, it produces
human chorionic gonadotropin (hCG).
 It can be detected from 6 days after conception.
 The pregnancy test uses monoclonal antibodies to test for the
presence of hCG in the urine.

1. Urinate on the test stick.
2. hCG binds to mobile monoclonal antibodies (which are
attached to a blue bead of dye).
3. The mobile antibodies move down the test stick.
4. There is a fixed site which hCG-monoclonal antibody complexes
bind to – holding the beads of dye in place along a line – this is
the test line.
5. Mobile antibodies with no hCG bind to another fixed line
beyond this point (this is the control line that shows the test
has worked).


Testing Urine – Anabolic Steroid Tests:
 Tests for steroids look for the substance itself or for a product
of its breakdown.
 Gas chromatography & mass spectroscopy are used to analyse
samples.

1. The sample is vaporised & passed through a polymer containing
column. The substances in the column are separated out due to
different movement speeds.
2. The mass spectrometer converts these compounds into ions &
separated these by mass and charge.
3. The results are analysed and compared to known substances.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller flcarr23. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £7.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

76799 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£7.99
  • (0)
  Add to cart