If you have more than one test - add them one by one.
Alpha-Fetoprotein Test - 20 laboratory tests found
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$53.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NY, NJ, RI$27.00$53.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time (PT) w/INR Blood Test $27.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $27.00 -
$54.00
Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NY, NJ, RI$10.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Jason HealthRequisition Charge (per order charge)$18.00$54.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Jason Health
- Prothrombin Time with INR $10.00
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$54.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: MD, NJ, NY, RI$28.00$54.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from DirectLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (PT, INR (Prothrombin Time) $28.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $28.00 -
$55.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: MD, NJ, NY, RI$29.00$55.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from HealthLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time (PT) with INR $29.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $29.00 -
$56.00
Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NJ, NY, RI$22.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Ulta Lab TestsRequisition Charge (per order charge)$8.00$56.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Ulta Lab Tests
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time (PT) with INR Most Popular $22.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $30.00 ( $22.00 panels price + $8.00 requisition charge) -
$59.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NY, NJ, RI$15.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Jason HealthRequisition Charge (per order charge)$18.00$59.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Jason Health
- Prothrombin with INR and Partial Thromboplastin Times $15.00
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$61.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NY, NJ, RI$35.00$61.00
Order from RequestATest
Step 1: Add to cart - for each panel below click "Add to Cart" button and then close the new tab.
- Click Add to Cart then close the new tab (Prothrombin Time (PT INR) Blood Test $35.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $35.00Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00 -
$61.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NJ, NY, RI$35.00$61.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Lab Testing API
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time with INR Blood Test (PT/INR) $35.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $35.00 -
$65.49
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NY, NJ, MA, MD, RI$39.49$65.49
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from LabsMD
Step 1: Add to cart - for each panel below click "Add to Cart" button and then close the new tab.
- Click Add to Cart then close the new tab (Prothrombin Time (PT) (INR) $39.49)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $39.49 -
$67.00
Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$26.00Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NJ, RI, NY$41.00$67.00
Order from LabReqs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $26.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $26.00Order from Personalabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Protime and International Normalized Ratio (PT/INR) / Anti Coagulation Therapy Blood Test $41.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $41.00 -
$86.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NY, NJ, RI$42.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$44.00$86.00
Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time (PT) w/INR and Partial Thromboplastin Time (PTT) Blood Test $42.00)
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein (AFP) Serum Test $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $86.00 -
$86.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NJ, NY, RI$34.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$44.00Ulta Lab TestsRequisition Charge (per order charge)$8.00$86.00
Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein (AFP) Serum Test $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00Order from Ulta Lab Tests
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times $34.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $42.00 ( $34.00 panels price + $8.00 requisition charge) -
$86.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NJ, NY, RI$34.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NJ, NY, RI$44.00Ulta Lab TestsRequisition Charge (per order charge)$8.00$86.00
Order from Ulta Lab Tests
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times $34.00)
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha Fetoprotein, Tumor Marker $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $86.00 ( $78.00 panels price + $8.00 requisition charge) -
$86.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NY, NJ, RI$42.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: MD, NJ, NY, RI$44.00$86.00
Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin Time (PT) w/INR and Partial Thromboplastin Time (PTT) Blood Test $42.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $42.00Order from HealthLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein Test, Tumor Marker $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00 -
$86.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NJ, NY, RI$34.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: MD, NJ, NY, RI$44.00Ulta Lab TestsRequisition Charge (per order charge)$8.00$86.00
Order from HealthLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein Test, Tumor Marker $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00Order from Ulta Lab Tests
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times $34.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $42.00 ( $34.00 panels price + $8.00 requisition charge) -
$87.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: MD, NJ, NY, RI$43.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$44.00$87.00
Order from DirectLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times (PT PTT/INR) $43.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $43.00Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein (AFP) Serum Test $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00 -
$87.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: MD, NJ, NY, RI$43.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: MD, NJ, NY, RI$44.00$87.00
Order from DirectLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times (PT PTT/INR) $43.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $43.00Order from HealthLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein Test, Tumor Marker $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00 -
$88.23
Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NJ, RI, NY$35.73Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NY, NJ, RI$44.00Health Tests DirectRequisition Charge (per order charge)$8.50$88.23
Order from Health Tests Direct
Step 1: Add to cart - for each panel below click "Add to Cart" button and then close the new tab.
- Click Add to Cart then close the new tab (PROTHROMBIN TIME-INR $35.73)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.23 ( $35.73 panels price + $8.50 requisition charge)Order from Walk-In Lab
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein (AFP) Serum Test $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00 -
$88.23
Covered tests: Prothrombin Time with INR (partial) (Quest)
Extra tests (click to add to search): Prothrombin Time with INR (partial) (Quest)
Covered components: INRExtra components (click to add to search): PTBlacklisted States: NJ, RI, NY$35.73Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: MD, NJ, NY, RI$44.00Health Tests DirectRequisition Charge (per order charge)$8.50$88.23
Order from Health Tests Direct
Step 1: Add to cart - for each panel below click "Add to Cart" button and then close the new tab.
- Click Add to Cart then close the new tab (PROTHROMBIN TIME-INR $35.73)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.23 ( $35.73 panels price + $8.50 requisition charge)Order from HealthLabs
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein Test, Tumor Marker $44.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $44.00 -
$89.00
Covered tests: Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Extra tests (click to add to search): Prothrombin with INR and Partial Thromboplastin Times (partial) (Quest)
Covered components: INRBlacklisted States: NJ, NY, RI$34.00Covered tests: Alpha-Fetoprotein, Tumor Marker (Quest)Covered components: Alpha Fetoprotein, Tumor MarkerBlacklisted States: NJ, NY, RI$47.00Ulta Lab TestsRequisition Charge (per order charge)$8.00$89.00
Order from Lab Testing API
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Alpha-Fetoprotein Tumor Marker Blood Test (AFP) $47.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $47.00Order from Ulta Lab Tests
Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab.
- Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Prothrombin with INR and Partial Thromboplastin Times $34.00)
Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $42.00 ( $34.00 panels price + $8.00 requisition charge)
Understanding of Lab Tests Results
Please visit the site associated with The American Association for Clinical Chemistry (AACC) for better understanding of tests. There you will find the most detailed and full information regarding lab tests. In "common questions" tab you will find answers on the most common questions.
In addition, you can use a special form to ask the question. It is useful, if there is no answer on your question on the web site. A laboratory scientist will answer your question. It is a part of voluntary service provided by the American Society for Clinical Laboratory Science.