The following questions refer to initial platelet recovery following the HCT for which this form is being completed. All dates should reflect no platelet transfusions administered for seven consecutive days. Report the date of the first of three consecutive laboratory (≥ 20 × 109/L and ≥ 50 × 109/L) obtained on different days, as shown in Example 10 below. Note that platelet recovery may take place well after the recipient has returned to the referring physician for care. It is essential that information and laboratory values be obtained from the referring physician.

Transfusions temporarily increase platelet counts. When the data is later used for analysis, it is important to be able to distinguish between a recipient whose own body was creating the platelets and a recipient who required transfusions to support the counts.

The following example illustrates the procedure to follow for reporting platelet recovery.

Example 1: Reporting Platelet Recovery

Example 2: Reporting Platelet Recovery (≥ 20 × 109/L and ≥ 50 × 109/L)

Date Day Platelet Count
June 13 0 10,000 Date of last platelet transfusion
June 14 1 30,000
June 15 2 25,000
June 16 3 10,000
June 17 4 15,000
June 18 5 19,000
June 19 6 23,000
June 20 7 25,000 1st of 3 consecutive laboratory values ≥ 20 × 109/L (report this date in question 15)
June 21 8 40,000
June 22 9 50,000 1st of 3 consecutive laboratory values ≥ 50 × 109/L (report this date in question 18)
June 23 10 56,000
June 24 11 65,000
June 25 12 72,000

This section relates to initial platelet recovery. All dates should reflect no transfusions in the previous 7 days. To report dates in this section, use the first of 3 consecutive laboratory values obtained on different days.

Question 13: Was an initial platelet count ≥ 20 × 109/L achieved?

Indicate whether or not there was evidence of initial platelet recovery following this HCT.

Check only one response:

  • If “yes,” continue with question 14.
  • If “no,” continue with question 19.
  • Check “not applicable,” if the recipient’s platelets never dropped below 20 × 109/L at any time post-HCT and a platelet transfusion was never required. If the recipient’s platelet count drops below 20 × 109/L and/or the recipient received a platelet transfusion even once, do not use this option. This option is only applicable in the 100-day reporting period. Continue with question 16.
  • Check “previously reported” if this is the 6 month or annual follow-up, and initial platelet recovery has already been reported on a previous form. Continue with question 16.

Question 14-15: Date platelet ≥ 20 × 109/L

Enter the first date of three consecutive laboratory values obtained on different days where the platelet count was ≥ 20 × 109/L. Ensure that no platelet transfusions were administered for seven days immediately preceding this date. Include day seven, as shown in Example 1 above, when determining the recovery date.

If three laboratory values were not obtained on consecutive days, but a sequential rise of ≥ 20 × 109/L is demonstrated, follow the examples below when determining an estimated date.

Reporting Scenarios:

A. The recipient is being seen in the outpatient clinic and receives a platelet transfusion on January 1. The platelet count is 22 × 109/L on January 2, 24 × 109/L on January 3, and 28 × 109/L on January 4. The recipient does not come into the clinic for evaluation until one month later. The recipient has not received any more platelet transfusions and the platelet count is well above 20 × 109/L. Report January 8 (day seven post-platelet transfusion) for the date of platelet recovery.

B. The recipient is being seen in the outpatient clinic and receives a platelet transfusion on January 1. The platelet count is ≥ 20 × 109/L on January 2, January 3, and January 4. The recipient is then discharged back to their primary care physician. The transplant center receives a follow-up note from the primary care physician that states “recipient recovered their platelets in January of 2011.” Report an estimated date of recovery using the guidelines available in General Instructions, General Guidelines for Completing Forms.

Question 16: Was an initial platelet count ≥ 50 × 109/L achieved?

Indicate whether a platelet count of ≥ 50 × 109/L was achieved following this HCT.

Check only one response:

  • If “yes,” continue with question 17.
  • If “no,” continue with question 19.
  • Check “not applicable,” if the platelet count never dropped below 50 × 109/L at any time post-HCT. Continue with question 19.
  • Check “previously reported,” if a platelet count of ≥ 50 × 109/L was achieved and reported previously. Continue with question 19.

Question 17-18: Date platelets ≥ 50 × 109/L:

Enter the first date of three consecutive laboratory values obtained on different days where the platelet count was ≥ 50 × 109/L. Ensure that no platelet transfusions were administered for seven days immediately preceding this date. Include day seven, as shown in Example 2 above, when determining the recovery date.

If three laboratory values were not obtained on consecutive days, but a sequential rise of ≥ 50 × 109/L is demonstrated, follow the examples included in the instructions for questions 14-15 above.

Section Updates:

Question Number Date of Change Add/Remove/Modify Description Reasoning (If applicable)
. . . . .
Last modified: Dec 22, 2020

Need more help with this?
Don’t hesitate to contact us here.

Was this helpful?

Yes No
You indicated this topic was not helpful to you ...
Could you please leave a comment telling us why? Thank you!
Thanks for your feedback.